77250573 has 6 divisors (see below), whose sum is σ = 111584174. Its totient is φ = 51500376.

The previous prime is 77250559. The next prime is 77250587. The reversal of 77250573 is 37505277.

It is an interprime number because it is at equal distance from previous prime (77250559) and next prime (77250587).

It can be written as a sum of positive squares in only one way, i.e., 77211369 + 39204 = 8787^2 + 198^2 .

It is not a de Polignac number, because 77250573 - 2⁵ = 77250541 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 (77250773) 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, 4291690 + ... + 4291707.

Almost surely, 2^77250573 is an apocalyptic number.

It is an amenable number.

77250573 is a deficient number, since it is larger than the sum of its proper divisors (34333601).

77250573 is a wasteful number, since it uses less digits than its factorization.

77250573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8583403 (or 8583400 counting only the distinct ones).

The product of its (nonzero) digits is 51450, while the sum is 36.

The square root of 77250573 is about 8789.2305123941. The cubic root of 77250573 is about 425.8930664616.

The spelling of 77250573 in words is "seventy-seven million, two hundred fifty thousand, five hundred seventy-three".