75612457 has 4 divisors (see below), whose sum is σ = 79592080. Its totient is φ = 71632836.

The previous prime is 75612443. The next prime is 75612491. The reversal of 75612457 is 75421657.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75612457 - 2¹⁵ = 75579689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75612557) 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, 1989783 + ... + 1989820.

It is an arithmetic number, because the mean of its divisors is an integer number (19898020).

Almost surely, 2^75612457 is an apocalyptic number.

It is an amenable number.

75612457 is a deficient number, since it is larger than the sum of its proper divisors (3979623).

75612457 is a wasteful number, since it uses less digits than its factorization.

75612457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979622.

The product of its digits is 58800, while the sum is 37.

The square root of 75612457 is about 8695.5423637632. The cubic root of 75612457 is about 422.8611470400.

The spelling of 75612457 in words is "seventy-five million, six hundred twelve thousand, four hundred fifty-seven".