156011401 has 8 divisors (see below), whose sum is σ = 192014144. Its totient is φ = 123437520.

The previous prime is 156011389. The next prime is 156011411. The reversal of 156011401 is 104110651.

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

It is a cyclic number.

It is not a de Polignac number, because 156011401 - 2¹⁵ = 155978633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156011411) 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, 857115 + ... + 857296.

It is an arithmetic number, because the mean of its divisors is an integer number (24001768).

Almost surely, 2^156011401 is an apocalyptic number.

It is an amenable number.

156011401 is a deficient number, since it is larger than the sum of its proper divisors (36002743).

156011401 is a wasteful number, since it uses less digits than its factorization.

156011401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714431.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 156011401 is about 12490.4523937286. The cubic root of 156011401 is about 538.3343749933.

The spelling of 156011401 in words is "one hundred fifty-six million, eleven thousand, four hundred one".