53319540 has 24 divisors (see below), whose sum is σ = 149294880. Its totient is φ = 14218528.

The previous prime is 53319517. The next prime is 53319569. The reversal of 53319540 is 4591335.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 53319498 and 53319507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444270 + ... + 444389.

It is an arithmetic number, because the mean of its divisors is an integer number (6220620).

Almost surely, 2^53319540 is an apocalyptic number.

It is an amenable number.

53319540 is an abundant number, since it is smaller than the sum of its proper divisors (95975340).

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

53319540 is a wasteful number, since it uses less digits than its factorization.

53319540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888671 (or 888669 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 53319540 is about 7302.0230073590. The cubic root of 53319540 is about 376.3819586955.

The spelling of 53319540 in words is "fifty-three million, three hundred nineteen thousand, five hundred forty".