255172646 has 16 divisors (see below), whose sum is σ = 394111680. Its totient is φ = 123819840.

The previous prime is 255172583. The next prime is 255172681. The reversal of 255172646 is 646271552.

It is a super-2 number, since 2×255172646² = 130226158533282632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26051 + ... + 34481.

It is an arithmetic number, because the mean of its divisors is an integer number (24631980).

Almost surely, 2^255172646 is an apocalyptic number.

255172646 is a deficient number, since it is larger than the sum of its proper divisors (138939034).

255172646 is a wasteful number, since it uses less digits than its factorization.

255172646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8879.

The product of its digits is 100800, while the sum is 38.

The square root of 255172646 is about 15974.1242639464. The cubic root of 255172646 is about 634.2756499547.

The spelling of 255172646 in words is "two hundred fifty-five million, one hundred seventy-two thousand, six hundred forty-six".