97121761 has 8 divisors (see below), whose sum is σ = 106023744. Its totient is φ = 88231920.

The previous prime is 97121747. The next prime is 97121771. The reversal of 97121761 is 16712179.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97121761 is a prime.

It is a super-2 number, since 2×97121761² = 18865272919482242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97121771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24996 + ... + 28618.

It is an arithmetic number, because the mean of its divisors is an integer number (13252968).

Almost surely, 2^97121761 is an apocalyptic number.

It is an amenable number.

97121761 is a deficient number, since it is larger than the sum of its proper divisors (8901983).

97121761 is a wasteful number, since it uses less digits than its factorization.

97121761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6071.

The product of its digits is 5292, while the sum is 34.

The square root of 97121761 is about 9855.0373413803. The cubic root of 97121761 is about 459.6622615402.

The spelling of 97121761 in words is "ninety-seven million, one hundred twenty-one thousand, seven hundred sixty-one".