156143901 has 4 divisors (see below), whose sum is σ = 208191872. Its totient is φ = 104095932.

The previous prime is 156143899. The next prime is 156143903. The reversal of 156143901 is 109341651.

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.

It is an interprime number because it is at equal distance from previous prime (156143899) and next prime (156143903).

It is not a de Polignac number, because 156143901 - 2¹ = 156143899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156143903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26023981 + ... + 26023986.

It is an arithmetic number, because the mean of its divisors is an integer number (52047968).

Almost surely, 2^156143901 is an apocalyptic number.

It is an amenable number.

156143901 is a deficient number, since it is larger than the sum of its proper divisors (52047971).

156143901 is an equidigital number, since it uses as much as digits as its factorization.

156143901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52047970.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 156143901 is about 12495.7553193074. The cubic root of 156143901 is about 538.4867337750.

The spelling of 156143901 in words is "one hundred fifty-six million, one hundred forty-three thousand, nine hundred one".