53623513 has 2 divisors, whose sum is σ = 53623514. Its totient is φ = 53623512.

The previous prime is 53623499. The next prime is 53623519. The reversal of 53623513 is 31532635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42354064 + 11269449 = 6508^2 + 3357^2 .

It is a cyclic number.

It is not a de Polignac number, because 53623513 - 2⁵ = 53623481 is a prime.

It is a super-2 number, since 2×53623513² = 5750962292922338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53623519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26811756 + 26811757.

It is an arithmetic number, because the mean of its divisors is an integer number (26811757).

Almost surely, 2^53623513 is an apocalyptic number.

It is an amenable number.

53623513 is a deficient number, since it is larger than the sum of its proper divisors (1).

53623513 is an equidigital number, since it uses as much as digits as its factorization.

53623513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 28.

The square root of 53623513 is about 7322.8077265486. The cubic root of 53623513 is about 377.0958509714.

The spelling of 53623513 in words is "fifty-three million, six hundred twenty-three thousand, five hundred thirteen".