53397550 has 12 divisors (see below), whose sum is σ = 99319536. Its totient is φ = 21359000.

The previous prime is 53397541. The next prime is 53397551. The reversal of 53397550 is 5579335.

53397550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53397551) 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 5 ways as a sum of consecutive naturals, for example, 533926 + ... + 534025.

It is an arithmetic number, because the mean of its divisors is an integer number (8276628).

Almost surely, 2^53397550 is an apocalyptic number.

53397550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

53397550 is a deficient number, since it is larger than the sum of its proper divisors (45921986).

53397550 is a wasteful number, since it uses less digits than its factorization.

53397550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067963 (or 1067958 counting only the distinct ones).

The product of its (nonzero) digits is 70875, while the sum is 37.

The square root of 53397550 is about 7307.3627253613. The cubic root of 53397550 is about 376.5654264506.

The spelling of 53397550 in words is "fifty-three million, three hundred ninety-seven thousand, five hundred fifty".