56381151 has 16 divisors (see below), whose sum is σ = 79453440. Its totient is φ = 35464320.

The previous prime is 56381123. The next prime is 56381159. The reversal of 56381151 is 15118365.

It is not a de Polignac number, because 56381151 - 2⁷ = 56381023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56381159) 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 15 ways as a sum of consecutive naturals, for example, 13111 + ... + 16871.

It is an arithmetic number, because the mean of its divisors is an integer number (4965840).

Almost surely, 2^56381151 is an apocalyptic number.

56381151 is a deficient number, since it is larger than the sum of its proper divisors (23072289).

56381151 is a wasteful number, since it uses less digits than its factorization.

56381151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046.

The product of its digits is 3600, while the sum is 30.

The square root of 56381151 is about 7508.7383094632. The cubic root of 56381151 is about 383.4522695003.

The spelling of 56381151 in words is "fifty-six million, three hundred eighty-one thousand, one hundred fifty-one".