53691048 has 24 divisors (see below), whose sum is σ = 145413450. Its totient is φ = 17896992.

The previous prime is 53691023. The next prime is 53691073. The reversal of 53691048 is 84019635.

It is an interprime number because it is at equal distance from previous prime (53691023) and next prime (53691073).

It can be written as a sum of positive squares in only one way, i.e., 37675044 + 16016004 = 6138^2 + 4002^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 5 ways as a sum of consecutive naturals, for example, 372783 + ... + 372926.

Almost surely, 2^53691048 is an apocalyptic number.

It is an amenable number.

53691048 is an abundant number, since it is smaller than the sum of its proper divisors (91722402).

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

53691048 is a wasteful number, since it uses less digits than its factorization.

53691048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745721 (or 745714 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 53691048 is about 7327.4175532721. The cubic root of 53691048 is about 377.2540930247.

The spelling of 53691048 in words is "fifty-three million, six hundred ninety-one thousand, forty-eight".