52640461 has 2 divisors, whose sum is σ = 52640462. Its totient is φ = 52640460.

The previous prime is 52640453. The next prime is 52640477. The reversal of 52640461 is 16404625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51926436 + 714025 = 7206^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 52640461 - 2³ = 52640453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52620461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26320230 + 26320231.

It is an arithmetic number, because the mean of its divisors is an integer number (26320231).

Almost surely, 2^52640461 is an apocalyptic number.

It is an amenable number.

52640461 is a deficient number, since it is larger than the sum of its proper divisors (1).

52640461 is an equidigital number, since it uses as much as digits as its factorization.

52640461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 52640461 is about 7255.3746285082. The cubic root of 52640461 is about 374.7772567578. Note that the first 3 decimals are identical.

The spelling of 52640461 in words is "fifty-two million, six hundred forty thousand, four hundred sixty-one".