52661437 has 2 divisors, whose sum is σ = 52661438. Its totient is φ = 52661436.

The previous prime is 52661417. The next prime is 52661443. The reversal of 52661437 is 73416625.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45010681 + 7650756 = 6709^2 + 2766^2 .

It is a cyclic number.

It is not a de Polignac number, because 52661437 - 2⁷ = 52661309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52661417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26330718 + 26330719.

It is an arithmetic number, because the mean of its divisors is an integer number (26330719).

Almost surely, 2^52661437 is an apocalyptic number.

It is an amenable number.

52661437 is a deficient number, since it is larger than the sum of its proper divisors (1).

52661437 is an equidigital number, since it uses as much as digits as its factorization.

52661437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 52661437 is about 7256.8200335960. The cubic root of 52661437 is about 374.8270301553.

The spelling of 52661437 in words is "fifty-two million, six hundred sixty-one thousand, four hundred thirty-seven".