57780147 has 8 divisors (see below), whose sum is σ = 77440144. Its totient is φ = 38320128.

The previous prime is 57780131. The next prime is 57780179. The reversal of 57780147 is 74108775.

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

It is not a de Polignac number, because 57780147 - 2⁴ = 57780131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57784147) 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, 49318 + ... + 50475.

It is an arithmetic number, because the mean of its divisors is an integer number (9680018).

Almost surely, 2^57780147 is an apocalyptic number.

57780147 is a deficient number, since it is larger than the sum of its proper divisors (19659997).

57780147 is a wasteful number, since it uses less digits than its factorization.

57780147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99989.

The product of its (nonzero) digits is 54880, while the sum is 39.

The square root of 57780147 is about 7601.3253449645. The cubic root of 57780147 is about 386.5979506143.

The spelling of 57780147 in words is "fifty-seven million, seven hundred eighty thousand, one hundred forty-seven".