652217457 has 4 divisors (see below), whose sum is σ = 869623280. Its totient is φ = 434811636.

The previous prime is 652217437. The next prime is 652217459. The reversal of 652217457 is 754712256.

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 652217457 - 2⁸ = 652217201 is a prime.

It is a super-2 number, since 2×652217457² = 850775222431093698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652217459) 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, 108702907 + ... + 108702912.

It is an arithmetic number, because the mean of its divisors is an integer number (217405820).

Almost surely, 2^652217457 is an apocalyptic number.

It is an amenable number.

652217457 is a deficient number, since it is larger than the sum of its proper divisors (217405823).

652217457 is a wasteful number, since it uses less digits than its factorization.

652217457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217405822.

The product of its digits is 117600, while the sum is 39.

The square root of 652217457 is about 25538.5484513118. The cubic root of 652217457 is about 867.2230375418.

The spelling of 652217457 in words is "six hundred fifty-two million, two hundred seventeen thousand, four hundred fifty-seven".