537477021 has 12 divisors (see below), whose sum is σ = 778356540. Its totient is φ = 357394560.

The previous prime is 537477013. The next prime is 537477043. The reversal of 537477021 is 120774735.

It can be written as a sum of positive squares in 2 ways, for example, as 202037796 + 335439225 = 14214^2 + 18315^2 .

It is not a de Polignac number, because 537477021 - 2³ = 537477013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537477001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73260 + ... + 80261.

It is an arithmetic number, because the mean of its divisors is an integer number (64863045).

Almost surely, 2^537477021 is an apocalyptic number.

It is an amenable number.

537477021 is a deficient number, since it is larger than the sum of its proper divisors (240879519).

537477021 is a wasteful number, since it uses less digits than its factorization.

537477021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153916 (or 153913 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 537477021 is about 23183.5506555834. The cubic root of 537477021 is about 813.0550790333.

The spelling of 537477021 in words is "five hundred thirty-seven million, four hundred seventy-seven thousand, twenty-one".