156072461 has 8 divisors (see below), whose sum is σ = 170952120. Its totient is φ = 141826048.

The previous prime is 156072443. The next prime is 156072463. The reversal of 156072461 is 164270651.

156072461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 85192900 + 70879561 = 9230^2 + 8419^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156072461 is a prime.

It is a super-2 number, since 2×156072461² = 48717226165193042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156072463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157796 + ... + 158781.

It is an arithmetic number, because the mean of its divisors is an integer number (21369015).

Almost surely, 2^156072461 is an apocalyptic number.

It is an amenable number.

156072461 is a deficient number, since it is larger than the sum of its proper divisors (14879659).

156072461 is a wasteful number, since it uses less digits than its factorization.

156072461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316623.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 156072461 is about 12492.8964215669. The cubic root of 156072461 is about 538.4045972321.

The spelling of 156072461 in words is "one hundred fifty-six million, seventy-two thousand, four hundred sixty-one".