653505172 has 12 divisors (see below), whose sum is σ = 1180525696. Its totient is φ = 316212120.

The previous prime is 653505161. The next prime is 653505197. The reversal of 653505172 is 271505356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2634978 + ... + 2635225.

Almost surely, 2^653505172 is an apocalyptic number.

653505172 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

653505172 is a deficient number, since it is larger than the sum of its proper divisors (527020524).

653505172 is a wasteful number, since it uses less digits than its factorization.

653505172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5270238 (or 5270236 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 653505172 is about 25563.7472214071. The cubic root of 653505172 is about 867.7934004674.

The spelling of 653505172 in words is "six hundred fifty-three million, five hundred five thousand, one hundred seventy-two".