53498640 has 120 divisors (see below), whose sum is σ = 179720640. Its totient is φ = 13158912.

The previous prime is 53498639. The next prime is 53498651. The reversal of 53498640 is 4689435.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39901 + ... + 41219.

It is an arithmetic number, because the mean of its divisors is an integer number (1497672).

Almost surely, 2^53498640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53498640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89860320).

53498640 is an abundant number, since it is smaller than the sum of its proper divisors (126222000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53498640 is a wasteful number, since it uses less digits than its factorization.

53498640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361 (or 1342 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 53498640 is about 7314.2764508870. The cubic root of 53498640 is about 376.8029092684.

The spelling of 53498640 in words is "fifty-three million, four hundred ninety-eight thousand, six hundred forty".