53249730 has 16 divisors (see below), whose sum is σ = 127799424. Its totient is φ = 14199920.

The previous prime is 53249719. The next prime is 53249741. The reversal of 53249730 is 3794235.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53249719) and next prime (53249741).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53249691 and 53249700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887466 + ... + 887525.

It is an arithmetic number, because the mean of its divisors is an integer number (7987464).

Almost surely, 2^53249730 is an apocalyptic number.

53249730 is an abundant number, since it is smaller than the sum of its proper divisors (74549694).

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

53249730 is a wasteful number, since it uses less digits than its factorization.

53249730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775001.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 53249730 is about 7297.2412595446. The cubic root of 53249730 is about 376.2176243191.

The spelling of 53249730 in words is "fifty-three million, two hundred forty-nine thousand, seven hundred thirty".