53557431261 has 8 divisors (see below), whose sum is σ = 75610491264. Its totient is φ = 33604662720.

The previous prime is 53557431199. The next prime is 53557431271. The reversal of 53557431261 is 16213475535.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53557431261 - 2⁶ = 53557431197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53557431271) 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 7 ways as a sum of consecutive naturals, for example, 525072805 + ... + 525072906.

It is an arithmetic number, because the mean of its divisors is an integer number (9451311408).

Almost surely, 2^53557431261 is an apocalyptic number.

53557431261 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

53557431261 is a deficient number, since it is larger than the sum of its proper divisors (22053060003).

53557431261 is a wasteful number, since it uses less digits than its factorization.

53557431261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050145731.

The product of its digits is 378000, while the sum is 42.

The spelling of 53557431261 in words is "fifty-three billion, five hundred fifty-seven million, four hundred thirty-one thousand, two hundred sixty-one".