57417990 has 64 divisors (see below), whose sum is σ = 159528960. Its totient is φ = 12954240.

The previous prime is 57417967. The next prime is 57417991. The reversal of 57417990 is 9971475.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57417991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14860 + ... + 18320.

It is an arithmetic number, because the mean of its divisors is an integer number (2492640).

Almost surely, 2^57417990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57417990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79764480).

57417990 is an abundant number, since it is smaller than the sum of its proper divisors (102110970).

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

57417990 is a wasteful number, since it uses less digits than its factorization.

57417990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3557.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 57417990 is about 7577.4659352583. The cubic root of 57417990 is about 385.7885451771.

It can be divided in two parts, 5741 and 7990, that added together give a palindrome (13731).

The spelling of 57417990 in words is "fifty-seven million, four hundred seventeen thousand, nine hundred ninety".