56121174 has 40 divisors (see below), whose sum is σ = 132378840. Its totient is φ = 17721504.

The previous prime is 56121167. The next prime is 56121181. The reversal of 56121174 is 47112165.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56121167) and next prime (56121181).

It is a super-2 number, since 2×56121174² = 6299172342276552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6039 + ... + 12194.

It is an arithmetic number, because the mean of its divisors is an integer number (3309471).

Almost surely, 2^56121174 is an apocalyptic number.

56121174 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

56121174 is an abundant number, since it is smaller than the sum of its proper divisors (76257666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56121174 is a wasteful number, since it uses less digits than its factorization.

56121174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18266 (or 18257 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 56121174 is about 7491.4066769866. The cubic root of 56121174 is about 382.8619871906.

Subtracting from 56121174 its reverse (47112165), we obtain a palindrome (9009009).

It can be divided in two parts, 5612 and 1174, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 56121174 in words is "fifty-six million, one hundred twenty-one thousand, one hundred seventy-four".