75320497 has 6 divisors (see below), whose sum is σ = 87617778. Its totient is φ = 64560384.

The previous prime is 75320471. The next prime is 75320513. The reversal of 75320497 is 79402357.

It can be written as a sum of positive squares in only one way, i.e., 54745201 + 20575296 = 7399^2 + 4536^2 .

It is not a de Polignac number, because 75320497 - 2⁷ = 75320369 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 (75320407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 768528 + ... + 768625.

It is an arithmetic number, because the mean of its divisors is an integer number (14602963).

Almost surely, 2^75320497 is an apocalyptic number.

It is an amenable number.

75320497 is a deficient number, since it is larger than the sum of its proper divisors (12297281).

75320497 is a wasteful number, since it uses less digits than its factorization.

75320497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537167 (or 1537160 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 75320497 is about 8678.7382147407. The cubic root of 75320497 is about 422.3161848767.

The spelling of 75320497 in words is "seventy-five million, three hundred twenty thousand, four hundred ninety-seven".