53551407 has 16 divisors (see below), whose sum is σ = 87879680. Its totient is φ = 28246752.

The previous prime is 53551403. The next prime is 53551417. The reversal of 53551407 is 70415535.

It is not a de Polignac number, because 53551407 - 2² = 53551403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53551403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97807 + ... + 98352.

It is an arithmetic number, because the mean of its divisors is an integer number (5492480).

Almost surely, 2^53551407 is an apocalyptic number.

53551407 is a deficient number, since it is larger than the sum of its proper divisors (34328273).

53551407 is a wasteful number, since it uses less digits than its factorization.

53551407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196182.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 53551407 is about 7317.8826855860. The cubic root of 53551407 is about 376.9267518293.

The spelling of 53551407 in words is "fifty-three million, five hundred fifty-one thousand, four hundred seven".