97551031 has 4 divisors (see below), whose sum is σ = 98647200. Its totient is φ = 96454864.

The previous prime is 97551019. The next prime is 97551071. The reversal of 97551031 is 13015579.

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

It is a cyclic number.

It is not a de Polignac number, because 97551031 - 2⁷ = 97550903 is a prime.

It is a super-2 number, since 2×97551031² = 19032407298325922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97550984 and 97551002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97551001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547951 + ... + 548128.

It is an arithmetic number, because the mean of its divisors is an integer number (24661800).

Almost surely, 2^97551031 is an apocalyptic number.

97551031 is a deficient number, since it is larger than the sum of its proper divisors (1096169).

97551031 is a wasteful number, since it uses less digits than its factorization.

97551031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096168.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 97551031 is about 9876.7925461660. The cubic root of 97551031 is about 460.3384890484.

The spelling of 97551031 in words is "ninety-seven million, five hundred fifty-one thousand, thirty-one".