57651978 has 8 divisors (see below), whose sum is σ = 115303968. Its totient is φ = 19217324.

The previous prime is 57651977. The next prime is 57651983. The reversal of 57651978 is 87915675.

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

57651978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (57651977) 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, 4804326 + ... + 4804337.

It is an arithmetic number, because the mean of its divisors is an integer number (14412996).

Almost surely, 2^57651978 is an apocalyptic number.

57651978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57651978 is a wasteful number, since it uses less digits than its factorization.

57651978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9608668.

The product of its digits is 529200, while the sum is 48.

The square root of 57651978 is about 7592.8899636436. The cubic root of 57651978 is about 386.3118860632.

The spelling of 57651978 in words is "fifty-seven million, six hundred fifty-one thousand, nine hundred seventy-eight".