75450057 has 4 divisors (see below), whose sum is σ = 100600080. Its totient is φ = 50300036.

The previous prime is 75450049. The next prime is 75450073. The reversal of 75450057 is 75005457.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75005457 = 3 ⋅25001819.

It is a cyclic number.

It is not a de Polignac number, because 75450057 - 2³ = 75450049 is a prime.

It is a super-2 number, since 2×75450057² = 11385422202606498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75450047) 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, 12575007 + ... + 12575012.

It is an arithmetic number, because the mean of its divisors is an integer number (25150020).

Almost surely, 2^75450057 is an apocalyptic number.

It is an amenable number.

75450057 is a deficient number, since it is larger than the sum of its proper divisors (25150023).

75450057 is a wasteful number, since it uses less digits than its factorization.

75450057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25150022.

The product of its (nonzero) digits is 24500, while the sum is 33.

The square root of 75450057 is about 8686.1992263590. The cubic root of 75450057 is about 422.5581904609.

The spelling of 75450057 in words is "seventy-five million, four hundred fifty thousand, fifty-seven".