56101812 has 48 divisors (see below), whose sum is σ = 142333632. Its totient is φ = 17095680.

The previous prime is 56101769. The next prime is 56101823. The reversal of 56101812 is 21810165.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15012 + ... + 18372.

It is an arithmetic number, because the mean of its divisors is an integer number (2965284).

Almost surely, 2^56101812 is an apocalyptic number.

56101812 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56101812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71166816).

56101812 is an abundant number, since it is smaller than the sum of its proper divisors (86231820).

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

56101812 is a wasteful number, since it uses less digits than its factorization.

56101812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488 (or 3486 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 56101812 is about 7490.1142848424. The cubic root of 56101812 is about 382.8179525543.

Adding to 56101812 its reverse (21810165), we get a palindrome (77911977).

The spelling of 56101812 in words is "fifty-six million, one hundred one thousand, eight hundred twelve".