256545154 has 8 divisors (see below), whose sum is σ = 384985980. Its totient is φ = 128216496.

The previous prime is 256545109. The next prime is 256545167. The reversal of 256545154 is 451545652.

It can be written as a sum of positive squares in 2 ways, for example, as 233264529 + 23280625 = 15273^2 + 4825^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22069 + ... + 31624.

Almost surely, 2^256545154 is an apocalyptic number.

256545154 is a deficient number, since it is larger than the sum of its proper divisors (128440826).

256545154 is a wasteful number, since it uses less digits than its factorization.

256545154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56084.

The product of its digits is 120000, while the sum is 37.

The square root of 256545154 is about 16017.0270025370. The cubic root of 256545154 is about 635.4108189552.

The spelling of 256545154 in words is "two hundred fifty-six million, five hundred forty-five thousand, one hundred fifty-four".