537513961 has 4 divisors (see below), whose sum is σ = 539231572. Its totient is φ = 535796352.

The previous prime is 537513959. The next prime is 537513983. The reversal of 537513961 is 169315735.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 169315735 = 5 ⋅33863147.

It can be written as a sum of positive squares in 2 ways, for example, as 15848361 + 521665600 = 3981^2 + 22840^2 .

It is a cyclic number.

It is not a de Polignac number, because 537513961 - 2¹ = 537513959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (537513901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858336 + ... + 858961.

It is an arithmetic number, because the mean of its divisors is an integer number (134807893).

Almost surely, 2^537513961 is an apocalyptic number.

It is an amenable number.

537513961 is a deficient number, since it is larger than the sum of its proper divisors (1717611).

537513961 is a wasteful number, since it uses less digits than its factorization.

537513961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717610.

The product of its digits is 85050, while the sum is 40.

The square root of 537513961 is about 23184.3473274535. The cubic root of 537513961 is about 813.0737052972.

The spelling of 537513961 in words is "five hundred thirty-seven million, five hundred thirteen thousand, nine hundred sixty-one".