151908261 has 16 divisors (see below), whose sum is σ = 212060160. Its totient is φ = 96543920.

The previous prime is 151908257. The next prime is 151908283. The reversal of 151908261 is 162809151.

It is a cyclic number.

It is not a de Polignac number, because 151908261 - 2² = 151908257 is a prime.

It is a super-2 number, since 2×151908261² = 46152239520088242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151908241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17920 + ... + 24998.

It is an arithmetic number, because the mean of its divisors is an integer number (13253760).

Almost surely, 2^151908261 is an apocalyptic number.

It is an amenable number.

151908261 is a deficient number, since it is larger than the sum of its proper divisors (60151899).

151908261 is a wasteful number, since it uses less digits than its factorization.

151908261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7416.

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 151908261 is about 12325.1069366558. The cubic root of 151908261 is about 533.5729412514.

The spelling of 151908261 in words is "one hundred fifty-one million, nine hundred eight thousand, two hundred sixty-one".