97550939 has 2 divisors, whose sum is σ = 97550940. Its totient is φ = 97550938.

The previous prime is 97550923. The next prime is 97550963. The reversal of 97550939 is 93905579.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97550939 - 2⁴ = 97550923 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 97550893 and 97550902.

It is not a weakly prime, because it can be changed into another prime (97550909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48775469 + 48775470.

It is an arithmetic number, because the mean of its divisors is an integer number (48775470).

Almost surely, 2^97550939 is an apocalyptic number.

97550939 is a deficient number, since it is larger than the sum of its proper divisors (1).

97550939 is an equidigital number, since it uses as much as digits as its factorization.

97550939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 382725, while the sum is 47.

The square root of 97550939 is about 9876.7878887825. The cubic root of 97550939 is about 460.3383443339.

It can be divided in two parts, 97550 and 939, that added together give a palindrome (98489).

The spelling of 97550939 in words is "ninety-seven million, five hundred fifty thousand, nine hundred thirty-nine".