256030051 has 4 divisors (see below), whose sum is σ = 258565104. Its totient is φ = 253495000.

The previous prime is 256030031. The next prime is 256030057. The reversal of 256030051 is 150030652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256030051 - 2⁷ = 256029923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256030057) 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, 1267375 + ... + 1267576.

It is an arithmetic number, because the mean of its divisors is an integer number (64641276).

Almost surely, 2^256030051 is an apocalyptic number.

256030051 is a deficient number, since it is larger than the sum of its proper divisors (2535053).

256030051 is a wasteful number, since it uses less digits than its factorization.

256030051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535052.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 256030051 is about 16000.9390661923. The cubic root of 256030051 is about 634.9852651220.

The spelling of 256030051 in words is "two hundred fifty-six million, thirty thousand, fifty-one".