56822121 has 32 divisors (see below), whose sum is σ = 90251520. Its totient is φ = 35240832.

The previous prime is 56822119. The next prime is 56822123. The reversal of 56822121 is 12122865.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56822119) and next prime (56822123).

It is not a de Polignac number, because 56822121 - 2¹ = 56822119 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (56822123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21741 + ... + 24213.

It is an arithmetic number, because the mean of its divisors is an integer number (2820360).

Almost surely, 2^56822121 is an apocalyptic number.

It is an amenable number.

56822121 is a deficient number, since it is larger than the sum of its proper divisors (33429399).

56822121 is a wasteful number, since it uses less digits than its factorization.

56822121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542 (or 2536 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 56822121 is about 7538.0449056768. The cubic root of 56822121 is about 384.4493640772.

Adding to 56822121 its reverse (12122865), we get a palindrome (68944986).

The spelling of 56822121 in words is "fifty-six million, eight hundred twenty-two thousand, one hundred twenty-one".