156256001 has 4 divisors (see below), whose sum is σ = 170461104. Its totient is φ = 142050900.

The previous prime is 156255971. The next prime is 156256003. The reversal of 156256001 is 100652651.

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: 100652651 = 11 ⋅9150241.

It is a cyclic number.

It is not a de Polignac number, because 156256001 - 2²² = 152061697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156256003) 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, 7102535 + ... + 7102556.

It is an arithmetic number, because the mean of its divisors is an integer number (42615276).

Almost surely, 2^156256001 is an apocalyptic number.

156256001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

156256001 is a deficient number, since it is larger than the sum of its proper divisors (14205103).

156256001 is a wasteful number, since it uses less digits than its factorization.

156256001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14205102.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 156256001 is about 12500.2400376953. The cubic root of 156256001 is about 538.6155677597.

The spelling of 156256001 in words is "one hundred fifty-six million, two hundred fifty-six thousand, one".