65552457 has 4 divisors (see below), whose sum is σ = 87403280. Its totient is φ = 43701636.

The previous prime is 65552449. The next prime is 65552471. The reversal of 65552457 is 75425556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65552457 - 2³ = 65552449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65552407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10925407 + ... + 10925412.

It is an arithmetic number, because the mean of its divisors is an integer number (21850820).

Almost surely, 2^65552457 is an apocalyptic number.

It is an amenable number.

65552457 is a deficient number, since it is larger than the sum of its proper divisors (21850823).

65552457 is a wasteful number, since it uses less digits than its factorization.

65552457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21850822.

The product of its digits is 210000, while the sum is 39.

The square root of 65552457 is about 8096.4471837961. The cubic root of 65552457 is about 403.2084807342.

The spelling of 65552457 in words is "sixty-five million, five hundred fifty-two thousand, four hundred fifty-seven".