97751947 has 4 divisors (see below), whose sum is σ = 98337456. Its totient is φ = 97166440.

The previous prime is 97751933. The next prime is 97751971. The reversal of 97751947 is 74915779.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97751947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97751947.

It is not an unprimeable number, because it can be changed into a prime (97751917) 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, 292504 + ... + 292837.

It is an arithmetic number, because the mean of its divisors is an integer number (24584364).

Almost surely, 2^97751947 is an apocalyptic number.

97751947 is a deficient number, since it is larger than the sum of its proper divisors (585509).

97751947 is a wasteful number, since it uses less digits than its factorization.

97751947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585508.

The product of its digits is 555660, while the sum is 49.

The square root of 97751947 is about 9886.9584301746. The cubic root of 97751947 is about 460.6543098808.

The spelling of 97751947 in words is "ninety-seven million, seven hundred fifty-one thousand, nine hundred forty-seven".