75450557 has 48 divisors (see below), whose sum is σ = 101191680. Its totient is φ = 54939456.

The previous prime is 75450533. The next prime is 75450601. The reversal of 75450557 is 75505457.

It is not a de Polignac number, because 75450557 - 2²⁰ = 74401981 is a prime.

It is a super-2 number, since 2×75450557² = 11385573103220498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75450557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75450517) 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, 1278794 + ... + 1278852.

It is an arithmetic number, because the mean of its divisors is an integer number (2108160).

Almost surely, 2^75450557 is an apocalyptic number.

It is an amenable number.

75450557 is a deficient number, since it is larger than the sum of its proper divisors (25741123).

75450557 is a wasteful number, since it uses less digits than its factorization.

75450557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 122500, while the sum is 38.

The square root of 75450557 is about 8686.2280075992. The cubic root of 75450557 is about 422.5591238758.

The spelling of 75450557 in words is "seventy-five million, four hundred fifty thousand, five hundred fifty-seven".