56111151 has 4 divisors (see below), whose sum is σ = 74814872. Its totient is φ = 37407432.

The previous prime is 56111149. The next prime is 56111189. The reversal of 56111151 is 15111165.

It is a happy number.

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

It is not a de Polignac number, because 56111151 - 2¹ = 56111149 is a prime.

It is a super-2 number, since 2×56111151² = 6296922533089602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56111141) 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, 9351856 + ... + 9351861.

It is an arithmetic number, because the mean of its divisors is an integer number (18703718).

Almost surely, 2^56111151 is an apocalyptic number.

56111151 is a deficient number, since it is larger than the sum of its proper divisors (18703721).

56111151 is a wasteful number, since it uses less digits than its factorization.

56111151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18703720.

The product of its digits is 150, while the sum is 21.

The square root of 56111151 is about 7490.7376806293. The cubic root of 56111151 is about 382.8391933329.

The spelling of 56111151 in words is "fifty-six million, one hundred eleven thousand, one hundred fifty-one".