56621954 has 12 divisors (see below), whose sum is σ = 85596486. Its totient is φ = 28090752.

The previous prime is 56621953. The next prime is 56621987. The reversal of 56621954 is 45912665.

It can be written as a sum of positive squares in only one way, i.e., 52954729 + 3667225 = 7277^2 + 1915^2 .

It is a super-3 number, since 3×56621954³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56621953) 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 5 ways as a sum of consecutive naturals, for example, 147647 + ... + 148029.

Almost surely, 2^56621954 is an apocalyptic number.

56621954 is a deficient number, since it is larger than the sum of its proper divisors (28974532).

56621954 is an equidigital number, since it uses as much as digits as its factorization.

56621954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 578 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 56621954 is about 7524.7560757808. The cubic root of 56621954 is about 383.9974003369.

It can be divided in two parts, 56621 and 954, that added together give a palindrome (57575).

The spelling of 56621954 in words is "fifty-six million, six hundred twenty-one thousand, nine hundred fifty-four".