57211960 has 32 divisors (see below), whose sum is σ = 138630240. Its totient is φ = 21124224.

The previous prime is 57211943. The next prime is 57211969. The reversal of 57211960 is 6911275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57211969) 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, 54492 + ... + 55531.

It is an arithmetic number, because the mean of its divisors is an integer number (4332195).

Almost surely, 2^57211960 is an apocalyptic number.

It is an amenable number.

57211960 is an abundant number, since it is smaller than the sum of its proper divisors (81418280).

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

57211960 is a wasteful number, since it uses less digits than its factorization.

57211960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110047 (or 110043 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 57211960 is about 7563.8588035473. The cubic root of 57211960 is about 385.3265571406.

The spelling of 57211960 in words is "fifty-seven million, two hundred eleven thousand, nine hundred sixty".