537561855 has 48 divisors (see below), whose sum is σ = 967599360. Its totient is φ = 275788800.

The previous prime is 537561821. The next prime is 537561859. The reversal of 537561855 is 558165735.

537561855 is a `hidden beast` number, since 5 + 3 + 7 + 561 + 85 + 5 = 666.

It is not a de Polignac number, because 537561855 - 2⁸ = 537561599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 537561855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537561859) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251431 + ... + 253559.

It is an arithmetic number, because the mean of its divisors is an integer number (20158320).

Almost surely, 2^537561855 is an apocalyptic number.

537561855 is a deficient number, since it is larger than the sum of its proper divisors (430037505).

537561855 is a wasteful number, since it uses less digits than its factorization.

537561855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352 (or 2349 counting only the distinct ones).

The product of its digits is 630000, while the sum is 45.

The square root of 537561855 is about 23185.3801995999. The cubic root of 537561855 is about 813.0978536284.

It can be divided in two parts, 53756 and 1855, that added together give a triangular number (55611 = T₃₃₃).

The spelling of 537561855 in words is "five hundred thirty-seven million, five hundred sixty-one thousand, eight hundred fifty-five".