65573457 has 4 divisors (see below), whose sum is σ = 87431280. Its totient is φ = 43715636.

The previous prime is 65573381. The next prime is 65573461. The reversal of 65573457 is 75437556.

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 a cyclic number.

It is not a de Polignac number, because 65573457 - 2¹⁰ = 65572433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65573467) 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, 10928907 + ... + 10928912.

It is an arithmetic number, because the mean of its divisors is an integer number (21857820).

Almost surely, 2^65573457 is an apocalyptic number.

It is an amenable number.

65573457 is a deficient number, since it is larger than the sum of its proper divisors (21857823).

65573457 is a wasteful number, since it uses less digits than its factorization.

65573457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21857822.

The product of its digits is 441000, while the sum is 42.

The square root of 65573457 is about 8097.7439450751. The cubic root of 65573457 is about 403.2515326373.

The spelling of 65573457 in words is "sixty-five million, five hundred seventy-three thousand, four hundred fifty-seven".