215460401 has 16 divisors (see below), whose sum is σ = 245636160. Its totient is φ = 187548480.

The previous prime is 215460373. The next prime is 215460439. The reversal of 215460401 is 104064512.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215460401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215460451) 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, 9566 + ... + 22856.

It is an arithmetic number, because the mean of its divisors is an integer number (15352260).

Almost surely, 2^215460401 is an apocalyptic number.

It is an amenable number.

215460401 is a deficient number, since it is larger than the sum of its proper divisors (30175759).

215460401 is a wasteful number, since it uses less digits than its factorization.

215460401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13376.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 215460401 is about 14678.5694466457. The cubic root of 215460401 is about 599.4999546698.

The spelling of 215460401 in words is "two hundred fifteen million, four hundred sixty thousand, four hundred one".