56121473 has 4 divisors (see below), whose sum is σ = 56209668. Its totient is φ = 56033280.

The previous prime is 56121469. The next prime is 56121491. The reversal of 56121473 is 37412165.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47430769 + 8690704 = 6887^2 + 2948^2 .

It is a cyclic number.

It is not a de Polignac number, because 56121473 - 2² = 56121469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56121413) 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, 43136 + ... + 44417.

It is an arithmetic number, because the mean of its divisors is an integer number (14052417).

Almost surely, 2^56121473 is an apocalyptic number.

It is an amenable number.

56121473 is a deficient number, since it is larger than the sum of its proper divisors (88195).

56121473 is an equidigital number, since it uses as much as digits as its factorization.

56121473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88194.

The product of its digits is 5040, while the sum is 29.

The square root of 56121473 is about 7491.4266331587. The cubic root of 56121473 is about 382.8626671213.

The spelling of 56121473 in words is "fifty-six million, one hundred twenty-one thousand, four hundred seventy-three".