727475121 has 16 divisors (see below), whose sum is σ = 1114905600. Its totient is φ = 468259344.

The previous prime is 727475117. The next prime is 727475123. The reversal of 727475121 is 121574727.

727475121 is a `hidden beast` number, since 72 + 74 + 7 + 512 + 1 = 666.

It is not a de Polignac number, because 727475121 - 2² = 727475117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (727475123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463761 + ... + 465326.

It is an arithmetic number, because the mean of its divisors is an integer number (69681600).

Almost surely, 2^727475121 is an apocalyptic number.

It is an amenable number.

727475121 is a deficient number, since it is larger than the sum of its proper divisors (387430479).

727475121 is a wasteful number, since it uses less digits than its factorization.

727475121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929125 (or 929119 counting only the distinct ones).

The product of its digits is 27440, while the sum is 36.

The square root of 727475121 is about 26971.7467176303. The cubic root of 727475121 is about 899.3720397307.

The spelling of 727475121 in words is "seven hundred twenty-seven million, four hundred seventy-five thousand, one hundred twenty-one".