155952001 has 4 divisors (see below), whose sum is σ = 156258900. Its totient is φ = 155645104.

The previous prime is 155951993. The next prime is 155952007. The reversal of 155952001 is 100259551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100259551 = 7 ⋅14322793.

It can be written as a sum of positive squares in 2 ways, for example, as 122323600 + 33628401 = 11060^2 + 5799^2 .

It is a cyclic number.

It is not a de Polignac number, because 155952001 - 2³ = 155951993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155952007) 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, 152686 + ... + 153703.

It is an arithmetic number, because the mean of its divisors is an integer number (39064725).

Almost surely, 2^155952001 is an apocalyptic number.

It is an amenable number.

155952001 is a deficient number, since it is larger than the sum of its proper divisors (306899).

155952001 is an equidigital number, since it uses as much as digits as its factorization.

155952001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306898.

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 155952001 is about 12488.0743511560. The cubic root of 155952001 is about 538.2660442584.

The spelling of 155952001 in words is "one hundred fifty-five million, nine hundred fifty-two thousand, one".