53415550 has 12 divisors (see below), whose sum is σ = 99353016. Its totient is φ = 21366200.

The previous prime is 53415539. The next prime is 53415601. The reversal of 53415550 is 5551435.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 534106 + ... + 534205.

It is an arithmetic number, because the mean of its divisors is an integer number (8279418).

Almost surely, 2^53415550 is an apocalyptic number.

53415550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

53415550 is a deficient number, since it is larger than the sum of its proper divisors (45937466).

53415550 is a wasteful number, since it uses less digits than its factorization.

53415550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068323 (or 1068318 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 53415550 is about 7308.5942560796. The cubic root of 53415550 is about 376.6077343605.

Adding to 53415550 its reverse (5551435), we get a palindrome (58966985).

The spelling of 53415550 in words is "fifty-three million, four hundred fifteen thousand, five hundred fifty".