53998615 has 16 divisors (see below), whose sum is σ = 71124480. Its totient is φ = 39029920.

The previous prime is 53998601. The next prime is 53998631. The reversal of 53998615 is 51689935.

It is not a de Polignac number, because 53998615 - 2¹³ = 53990423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6246 + ... + 12124.

It is an arithmetic number, because the mean of its divisors is an integer number (4445280).

Almost surely, 2^53998615 is an apocalyptic number.

53998615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53998615 is a deficient number, since it is larger than the sum of its proper divisors (17125865).

53998615 is a wasteful number, since it uses less digits than its factorization.

53998615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6062.

The product of its digits is 291600, while the sum is 46.

The square root of 53998615 is about 7348.3749904316. The cubic root of 53998615 is about 377.9730834767.

The spelling of 53998615 in words is "fifty-three million, nine hundred ninety-eight thousand, six hundred fifteen".