53972076349 has 4 divisors (see below), whose sum is σ = 55833182460. Its totient is φ = 52110970240.

The previous prime is 53972076337. The next prime is 53972076371. The reversal of 53972076349 is 94367027935.

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 10162656100 + 43809420249 = 100810^2 + 209307^2 .

It is a cyclic number.

It is not a de Polignac number, because 53972076349 - 2²¹ = 53969979197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53972076349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53972076329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930553012 + ... + 930553069.

It is an arithmetic number, because the mean of its divisors is an integer number (13958295615).

Almost surely, 2^53972076349 is an apocalyptic number.

It is an amenable number.

53972076349 is a deficient number, since it is larger than the sum of its proper divisors (1861106111).

53972076349 is a wasteful number, since it uses less digits than its factorization.

53972076349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861106110.

The product of its (nonzero) digits is 8573040, while the sum is 55.

The spelling of 53972076349 in words is "fifty-three billion, nine hundred seventy-two million, seventy-six thousand, three hundred forty-nine".