537240761 has 4 divisors (see below), whose sum is σ = 540209124. Its totient is φ = 534272400.

The previous prime is 537240733. The next prime is 537240787. The reversal of 537240761 is 167042735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42445225 + 494795536 = 6515^2 + 22244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-537240761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (537240061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483910 + ... + 1484271.

It is an arithmetic number, because the mean of its divisors is an integer number (135052281).

Almost surely, 2^537240761 is an apocalyptic number.

It is an amenable number.

537240761 is a deficient number, since it is larger than the sum of its proper divisors (2968363).

537240761 is a wasteful number, since it uses less digits than its factorization.

537240761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2968362.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 537240761 is about 23178.4546723892. The cubic root of 537240761 is about 812.9359294148.

The spelling of 537240761 in words is "five hundred thirty-seven million, two hundred forty thousand, seven hundred sixty-one".