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152450431 = 721778633
BaseRepresentation
bin10010001011000…
…11010101111111
3101121212021200021
421011203111333
5303011403211
623043313011
73530543620
oct1105432577
9347767607
10152450431
11790662a1
124307b767
1325779373
1416365a47
15d5b5771
hex916357f

152450431 has 4 divisors (see below), whose sum is σ = 174229072. Its totient is φ = 130671792.

The previous prime is 152450411. The next prime is 152450453. The reversal of 152450431 is 134054251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134054251 = 751178501.

It is a cyclic number.

It is not a de Polignac number, because 152450431 - 213 = 152442239 is a prime.

It is a super-2 number, since 2×1524504312 = 46482267824171522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152450396 and 152450405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152450401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10889310 + ... + 10889323.

It is an arithmetic number, because the mean of its divisors is an integer number (43557268).

Almost surely, 2152450431 is an apocalyptic number.

152450431 is a deficient number, since it is larger than the sum of its proper divisors (21778641).

152450431 is an equidigital number, since it uses as much as digits as its factorization.

152450431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21778640.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 152450431 is about 12347.0818819671. The cubic root of 152450431 is about 534.2069725171.

It can be divided in two parts, 152450 and 431, that added together give a square (152881 = 3912).

The spelling of 152450431 in words is "one hundred fifty-two million, four hundred fifty thousand, four hundred thirty-one".

Divisors: 1 7 21778633 152450431