537651261 has 12 divisors (see below), whose sum is σ = 887551392. Its totient is φ = 307229256.

The previous prime is 537651241. The next prime is 537651277. The reversal of 537651261 is 162156735.

537651261 is a `hidden beast` number, since 537 + 65 + 1 + 2 + 61 = 666.

It is not a de Polignac number, because 537651261 - 2¹³ = 537643069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537651211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4267011 + ... + 4267136.

It is an arithmetic number, because the mean of its divisors is an integer number (73962616).

Almost surely, 2^537651261 is an apocalyptic number.

It is an amenable number.

537651261 is a deficient number, since it is larger than the sum of its proper divisors (349900131).

537651261 is a wasteful number, since it uses less digits than its factorization.

537651261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8534160 (or 8534157 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 537651261 is about 23187.3081878859. The cubic root of 537651261 is about 813.1429286254.

The spelling of 537651261 in words is "five hundred thirty-seven million, six hundred fifty-one thousand, two hundred sixty-one".