57567990 has 16 divisors (see below), whose sum is σ = 138163248. Its totient is φ = 15351456.

The previous prime is 57567953. The next prime is 57568003. The reversal of 57567990 is 9976575.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959437 + ... + 959496.

It is an arithmetic number, because the mean of its divisors is an integer number (8635203).

Almost surely, 2^57567990 is an apocalyptic number.

57567990 is an abundant number, since it is smaller than the sum of its proper divisors (80595258).

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

57567990 is a wasteful number, since it uses less digits than its factorization.

57567990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918943.

The product of its (nonzero) digits is 595350, while the sum is 48.

The square root of 57567990 is about 7587.3572474215. The cubic root of 57567990 is about 386.1242005044.

It can be divided in two parts, 575679 and 90, that multiplied together give a triangular number (51811110 = T₁₀₁₇₉).

The spelling of 57567990 in words is "fifty-seven million, five hundred sixty-seven thousand, nine hundred ninety".