53699140 has 24 divisors (see below), whose sum is σ = 123020352. Its totient is φ = 19526880.

The previous prime is 53699117. The next prime is 53699159. The reversal of 53699140 is 4199635.

It is a self number, because there is not a number n which added to its sum of digits gives 53699140.

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, 121824 + ... + 122263.

It is an arithmetic number, because the mean of its divisors is an integer number (5125848).

Almost surely, 2^53699140 is an apocalyptic number.

It is an amenable number.

53699140 is an abundant number, since it is smaller than the sum of its proper divisors (69321212).

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

53699140 is a wasteful number, since it uses less digits than its factorization.

53699140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244107 (or 244105 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 53699140 is about 7327.9697051776. The cubic root of 53699140 is about 377.2730445811.

Subtracting from 53699140 its product of nonzero digits (29160), we obtain a triangular number (53669980 = T₁₀₃₆₀).

The spelling of 53699140 in words is "fifty-three million, six hundred ninety-nine thousand, one hundred forty".