97051421 has 16 divisors (see below), whose sum is σ = 105922560. Its totient is φ = 88648560.

The previous prime is 97051397. The next prime is 97051433. The reversal of 97051421 is 12415079.

It is a cyclic number.

It is not a de Polignac number, because 97051421 - 2²² = 92857117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97051921) 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, 55466 + ... + 57188.

It is an arithmetic number, because the mean of its divisors is an integer number (6620160).

Almost surely, 2^97051421 is an apocalyptic number.

It is an amenable number.

97051421 is a deficient number, since it is larger than the sum of its proper divisors (8871139).

97051421 is a wasteful number, since it uses less digits than its factorization.

97051421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 97051421 is about 9851.4679616796. The cubic root of 97051421 is about 459.5512652956.

The spelling of 97051421 in words is "ninety-seven million, fifty-one thousand, four hundred twenty-one".