53602421 has 2 divisors, whose sum is σ = 53602422. Its totient is φ = 53602420.

The previous prime is 53602403. The next prime is 53602427. The reversal of 53602421 is 12420635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28462225 + 25140196 = 5335^2 + 5014^2 .

It is a cyclic number.

It is not a de Polignac number, because 53602421 - 2⁶ = 53602357 is a prime.

It is a super-2 number, since 2×53602421² = 5746439074122482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_3203834 and since 53602421 and 3203834 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53602427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26801210 + 26801211.

It is an arithmetic number, because the mean of its divisors is an integer number (26801211).

Almost surely, 2^53602421 is an apocalyptic number.

It is an amenable number.

53602421 is a deficient number, since it is larger than the sum of its proper divisors (1).

53602421 is an equidigital number, since it uses as much as digits as its factorization.

53602421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 53602421 is about 7321.3674269224. The cubic root of 53602421 is about 377.0464028326.

The spelling of 53602421 in words is "fifty-three million, six hundred two thousand, four hundred twenty-one".