76578253 has 4 divisors (see below), whose sum is σ = 77721280. Its totient is φ = 75435228.

The previous prime is 76578239. The next prime is 76578317. The reversal of 76578253 is 35287567.

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: 35287567 = 7 ⋅5041081.

It is a cyclic number.

It is not a de Polignac number, because 76578253 - 2⁵ = 76578221 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 (76578233) 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, 571413 + ... + 571546.

It is an arithmetic number, because the mean of its divisors is an integer number (19430320).

Almost surely, 2^76578253 is an apocalyptic number.

It is an amenable number.

76578253 is a deficient number, since it is larger than the sum of its proper divisors (1143027).

76578253 is a wasteful number, since it uses less digits than its factorization.

76578253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143026.

The product of its digits is 352800, while the sum is 43.

The square root of 76578253 is about 8750.9001251300. The cubic root of 76578253 is about 424.6539337395.

The spelling of 76578253 in words is "seventy-six million, five hundred seventy-eight thousand, two hundred fifty-three".