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151680253 = 263576731
BaseRepresentation
bin10010000101001…
…11010011111101
3101120102011012011
421002213103331
5302312232003
623015011221
73521155324
oct1102472375
9346364164
10151680253
117868a68a
1242969b11
132556993a
14162050bb
15d4b246d
hex90a74fd

151680253 has 4 divisors (see below), whose sum is σ = 152257248. Its totient is φ = 151103260.

The previous prime is 151680251. The next prime is 151680257. The reversal of 151680253 is 352086151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352086151 = 1549227299.

It is a cyclic number.

It is not a de Polignac number, because 151680253 - 21 = 151680251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151680251) 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, 288103 + ... + 288628.

It is an arithmetic number, because the mean of its divisors is an integer number (38064312).

Almost surely, 2151680253 is an apocalyptic number.

It is an amenable number.

151680253 is a deficient number, since it is larger than the sum of its proper divisors (576995).

151680253 is an equidigital number, since it uses as much as digits as its factorization.

151680253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576994.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 151680253 is about 12315.8537259907. The cubic root of 151680253 is about 533.3058506238.

The spelling of 151680253 in words is "one hundred fifty-one million, six hundred eighty thousand, two hundred fifty-three".

Divisors: 1 263 576731 151680253