53498991 has 16 divisors (see below), whose sum is σ = 87793664. Its totient is φ = 28219104.

The previous prime is 53498981. The next prime is 53499001. The reversal of 53498991 is 19989435.

53498991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (53498981) and next prime (53499001).

It is not a de Polignac number, because 53498991 - 2⁹ = 53498479 is a prime.

It is a super-3 number, since 3×53498991³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53498991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53498941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97711 + ... + 98256.

It is an arithmetic number, because the mean of its divisors is an integer number (5487104).

Almost surely, 2^53498991 is an apocalyptic number.

53498991 is a deficient number, since it is larger than the sum of its proper divisors (34294673).

53498991 is a wasteful number, since it uses less digits than its factorization.

53498991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195990.

The product of its digits is 349920, while the sum is 48.

The square root of 53498991 is about 7314.3004450186. The cubic root of 53498991 is about 376.8037333238.

The spelling of 53498991 in words is "fifty-three million, four hundred ninety-eight thousand, nine hundred ninety-one".