4457656572 has 12 divisors (see below), whose sum is σ = 10401198696. Its totient is φ = 1485885520.

The previous prime is 4457656537. The next prime is 4457656589. The reversal of 4457656572 is 2756567544.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×4457656572² = 39741404227789582368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185735679 + ... + 185735702.

It is an arithmetic number, because the mean of its divisors is an integer number (866766558).

Almost surely, 2^4457656572 is an apocalyptic number.

It is an amenable number.

4457656572 is an abundant number, since it is smaller than the sum of its proper divisors (5943542124).

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

4457656572 is a wasteful number, since it uses less digits than its factorization.

4457656572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371471388 (or 371471386 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 51.

The square root of 4457656572 is about 66765.6840899575. The cubic root of 4457656572 is about 1645.7689665878.

The spelling of 4457656572 in words is "four billion, four hundred fifty-seven million, six hundred fifty-six thousand, five hundred seventy-two".