53440707 has 32 divisors (see below), whose sum is σ = 81492480. Its totient is φ = 30947840.

The previous prime is 53440693. The next prime is 53440729. The reversal of 53440707 is 70704435.

It is a cyclic number.

It is not a de Polignac number, because 53440707 - 2¹⁸ = 53178563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53440747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33232 + ... + 34802.

It is an arithmetic number, because the mean of its divisors is an integer number (2546640).

Almost surely, 2^53440707 is an apocalyptic number.

53440707 is a deficient number, since it is larger than the sum of its proper divisors (28051773).

53440707 is a wasteful number, since it uses less digits than its factorization.

53440707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 53440707 is about 7310.3151094874. The cubic root of 53440707 is about 376.6668484436. Note that the first 3 decimals are identical.

The spelling of 53440707 in words is "fifty-three million, four hundred forty thousand, seven hundred seven".