131664550 has 12 divisors (see below), whose sum is σ = 244896156. Its totient is φ = 52665800.

The previous prime is 131664539. The next prime is 131664551. The reversal of 131664550 is 55466131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131664551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1316596 + ... + 1316695.

It is an arithmetic number, because the mean of its divisors is an integer number (20408013).

Almost surely, 2^131664550 is an apocalyptic number.

131664550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131664550 is a deficient number, since it is larger than the sum of its proper divisors (113231606).

131664550 is a wasteful number, since it uses less digits than its factorization.

131664550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633303 (or 2633298 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 131664550 is about 11474.5174190464. The cubic root of 131664550 is about 508.7326600348.

The spelling of 131664550 in words is "one hundred thirty-one million, six hundred sixty-four thousand, five hundred fifty".