57778253 has 8 divisors (see below), whose sum is σ = 62285496. Its totient is φ = 53280000.

The previous prime is 57778249. The next prime is 57778261. The reversal of 57778253 is 35287775.

It can be written as a sum of positive squares in 4 ways, for example, as 1857769 + 55920484 = 1363^2 + 7478^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57778253 - 2² = 57778249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57778213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17753 + ... + 20753.

It is an arithmetic number, because the mean of its divisors is an integer number (7785687).

Almost surely, 2^57778253 is an apocalyptic number.

It is an amenable number.

57778253 is a deficient number, since it is larger than the sum of its proper divisors (4507243).

57778253 is a wasteful number, since it uses less digits than its factorization.

57778253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4495.

The product of its digits is 411600, while the sum is 44.

The square root of 57778253 is about 7601.2007604062. The cubic root of 57778253 is about 386.5937264153.

The spelling of 57778253 in words is "fifty-seven million, seven hundred seventy-eight thousand, two hundred fifty-three".