52581407 has 2 divisors, whose sum is σ = 52581408. Its totient is φ = 52581406.

The previous prime is 52581383. The next prime is 52581409. The reversal of 52581407 is 70418525.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52581407 - 2¹⁰ = 52580383 is a prime.

Together with 52581409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52581409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26290703 + 26290704.

It is an arithmetic number, because the mean of its divisors is an integer number (26290704).

Almost surely, 2^52581407 is an apocalyptic number.

52581407 is a deficient number, since it is larger than the sum of its proper divisors (1).

52581407 is an equidigital number, since it uses as much as digits as its factorization.

52581407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 52581407 is about 7251.3038137979. The cubic root of 52581407 is about 374.6370580268.

The spelling of 52581407 in words is "fifty-two million, five hundred eighty-one thousand, four hundred seven".