672155451 has 24 divisors (see below), whose sum is σ = 1060622784. Its totient is φ = 406802160.

The previous prime is 672155447. The next prime is 672155453. The reversal of 672155451 is 154551276.

It is not a de Polignac number, because 672155451 - 2² = 672155447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (672155453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73600 + ... + 82226.

It is an arithmetic number, because the mean of its divisors is an integer number (44192616).

Almost surely, 2^672155451 is an apocalyptic number.

672155451 is a deficient number, since it is larger than the sum of its proper divisors (388467333).

672155451 is a wasteful number, since it uses less digits than its factorization.

672155451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9431 (or 9428 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 672155451 is about 25925.9609465107. The cubic root of 672155451 is about 875.9713625154.

The spelling of 672155451 in words is "six hundred seventy-two million, one hundred fifty-five thousand, four hundred fifty-one".