Search a number
-
+
155460023 = 719216217
BaseRepresentation
bin10010100010000…
…10000110110111
3101211112012001122
421101002012313
5304244210043
623232014155
73565250135
oct1121020667
9354465048
10155460023
117a831464
124409135b
13262911a4
141690a755
15d9ac368
hex94421b7

155460023 has 4 divisors (see below), whose sum is σ = 155676960. Its totient is φ = 155243088.

The previous prime is 155460001. The next prime is 155460029. The reversal of 155460023 is 320064551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-155460023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155459974 and 155460001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155460029) 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, 107390 + ... + 108827.

It is an arithmetic number, because the mean of its divisors is an integer number (38919240).

Almost surely, 2155460023 is an apocalyptic number.

155460023 is a deficient number, since it is larger than the sum of its proper divisors (216937).

155460023 is an equidigital number, since it uses as much as digits as its factorization.

155460023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216936.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 155460023 is about 12468.3608786400. The cubic root of 155460023 is about 537.6994297278.

The spelling of 155460023 in words is "one hundred fifty-five million, four hundred sixty thousand, twenty-three".

Divisors: 1 719 216217 155460023