75422457 has 48 divisors (see below), whose sum is σ = 126659520. Its totient is φ = 42768000.

The previous prime is 75422453. The next prime is 75422461.

It is a happy number.

75422457 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (75422453) and next prime (75422461).

It is not a de Polignac number, because 75422457 - 2² = 75422453 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (75422453) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 189783 + ... + 190179.

It is an arithmetic number, because the mean of its divisors is an integer number (2638740).

Almost surely, 2^75422457 is an apocalyptic number.

It is an amenable number.

75422457 is a deficient number, since it is larger than the sum of its proper divisors (51237063).

75422457 is a wasteful number, since it uses less digits than its factorization.

75422457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 531 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 75422457 is about 8684.6103539537. The cubic root of 75422457 is about 422.5066595591.

It can be divided in two parts, 7542 and 2457, that added together give a palindrome (9999).

The spelling of 75422457 in words is "seventy-five million, four hundred twenty-two thousand, four hundred fifty-seven".