52207491 has 24 divisors (see below), whose sum is σ = 82515024. Its totient is φ = 29265600.

The previous prime is 52207487. The next prime is 52207517. The reversal of 52207491 is 19470225.

It is not a de Polignac number, because 52207491 - 2² = 52207487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52207411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4441 + ... + 11141.

It is an arithmetic number, because the mean of its divisors is an integer number (3438126).

Almost surely, 2^52207491 is an apocalyptic number.

52207491 is a deficient number, since it is larger than the sum of its proper divisors (30307533).

52207491 is a wasteful number, since it uses less digits than its factorization.

52207491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6771 (or 6764 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 52207491 is about 7225.4751400859. The cubic root of 52207491 is about 373.7469071306.

The spelling of 52207491 in words is "fifty-two million, two hundred seven thousand, four hundred ninety-one".