53249731515 has 12 divisors (see below), whose sum is σ = 92299534704. Its totient is φ = 28399856784.

The previous prime is 53249731489. The next prime is 53249731541. The reversal of 53249731515 is 51513794235.

53249731515 is a `hidden beast` number, since 5 + 3 + 2 + 497 + 3 + 151 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (53249731489) and next prime (53249731541).

It is not a de Polignac number, because 53249731515 - 2¹⁴ = 53249715131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1183327367 = 53249731515 / (5 + 3 + 2 + 4 + 9 + 7 + 3 + 1 + 5 + 1 + 5).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 591663639 + ... + 591663728.

It is an arithmetic number, because the mean of its divisors is an integer number (7691627892).

Almost surely, 2^53249731515 is an apocalyptic number.

53249731515 is a deficient number, since it is larger than the sum of its proper divisors (39049803189).

53249731515 is a wasteful number, since it uses less digits than its factorization.

53249731515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183327378 (or 1183327375 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The spelling of 53249731515 in words is "fifty-three billion, two hundred forty-nine million, seven hundred thirty-one thousand, five hundred fifteen".