97691501 has 4 divisors (see below), whose sum is σ = 97785504. Its totient is φ = 97597500.

The previous prime is 97691497. The next prime is 97691533. The reversal of 97691501 is 10519679.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 97691501 - 2² = 97691497 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 (97691591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45425 + ... + 47526.

It is an arithmetic number, because the mean of its divisors is an integer number (24446376).

Almost surely, 2^97691501 is an apocalyptic number.

It is an amenable number.

97691501 is a deficient number, since it is larger than the sum of its proper divisors (94003).

97691501 is a wasteful number, since it uses less digits than its factorization.

97691501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94002.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 97691501 is about 9883.9011022976. The cubic root of 97691501 is about 460.5593400699.

The spelling of 97691501 in words is "ninety-seven million, six hundred ninety-one thousand, five hundred one".