56146421 has 2 divisors, whose sum is σ = 56146422. Its totient is φ = 56146420.

The previous prime is 56146411. The next prime is 56146439. The reversal of 56146421 is 12464165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36663025 + 19483396 = 6055^2 + 4414^2 .

It is a cyclic number.

It is not a de Polignac number, because 56146421 - 2¹⁴ = 56130037 is a prime.

It is a super-2 number, since 2×56146421² = 6304841182218482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56146411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28073210 + 28073211.

It is an arithmetic number, because the mean of its divisors is an integer number (28073211).

Almost surely, 2^56146421 is an apocalyptic number.

It is an amenable number.

56146421 is a deficient number, since it is larger than the sum of its proper divisors (1).

56146421 is an equidigital number, since it uses as much as digits as its factorization.

56146421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 56146421 is about 7493.0915515560. The cubic root of 56146421 is about 382.9193907621.

The spelling of 56146421 in words is "fifty-six million, one hundred forty-six thousand, four hundred twenty-one".