152771681 has 16 divisors (see below), whose sum is σ = 165801600. Its totient is φ = 140329728.

The previous prime is 152771669. The next prime is 152771687. The reversal of 152771681 is 186177251.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 152771681 - 2¹⁴ = 152755297 is a prime.

It is a super-2 number, since 2×152771681² = 46678373031131522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152771687) 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, 150905 + ... + 151913.

It is an arithmetic number, because the mean of its divisors is an integer number (10362600).

Almost surely, 2^152771681 is an apocalyptic number.

It is an amenable number.

152771681 is a deficient number, since it is larger than the sum of its proper divisors (13029919).

152771681 is a wasteful number, since it uses less digits than its factorization.

152771681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288.

The product of its digits is 23520, while the sum is 38.

The square root of 152771681 is about 12360.0841825612. The cubic root of 152771681 is about 534.5819437687.

The spelling of 152771681 in words is "one hundred fifty-two million, seven hundred seventy-one thousand, six hundred eighty-one".