53476421 has 2 divisors, whose sum is σ = 53476422. Its totient is φ = 53476420.

The previous prime is 53476399. The next prime is 53476447. The reversal of 53476421 is 12467435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53085796 + 390625 = 7286^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 53476421 - 2²² = 49282117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53476471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26738210 + 26738211.

It is an arithmetic number, because the mean of its divisors is an integer number (26738211).

Almost surely, 2^53476421 is an apocalyptic number.

It is an amenable number.

53476421 is a deficient number, since it is larger than the sum of its proper divisors (1).

53476421 is an equidigital number, since it uses as much as digits as its factorization.

53476421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 32.

The square root of 53476421 is about 7312.7574142727. The cubic root of 53476421 is about 376.7507375799.

The spelling of 53476421 in words is "fifty-three million, four hundred seventy-six thousand, four hundred twenty-one".