256151541 has 4 divisors (see below), whose sum is σ = 341535392. Its totient is φ = 170767692.

The previous prime is 256151527. The next prime is 256151569. The reversal of 256151541 is 145151652.

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 not a de Polignac number, because 256151541 - 2⁹ = 256151029 is a prime.

It is a super-2 number, since 2×256151541² = 131227223913349362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 256151499 and 256151508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256151501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42691921 + ... + 42691926.

It is an arithmetic number, because the mean of its divisors is an integer number (85383848).

Almost surely, 2^256151541 is an apocalyptic number.

It is an amenable number.

256151541 is a deficient number, since it is larger than the sum of its proper divisors (85383851).

256151541 is an equidigital number, since it uses as much as digits as its factorization.

256151541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85383850.

The product of its digits is 6000, while the sum is 30.

The square root of 256151541 is about 16004.7349556311. The cubic root of 256151541 is about 635.0856858352.

The spelling of 256151541 in words is "two hundred fifty-six million, one hundred fifty-one thousand, five hundred forty-one".