53660407 has 4 divisors (see below), whose sum is σ = 53832160. Its totient is φ = 53488656.

The previous prime is 53660401. The next prime is 53660429. The reversal of 53660407 is 70406635.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53660407 - 2¹¹ = 53658359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53660401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85407 + ... + 86032.

It is an arithmetic number, because the mean of its divisors is an integer number (13458040).

Almost surely, 2^53660407 is an apocalyptic number.

53660407 is a deficient number, since it is larger than the sum of its proper divisors (171753).

53660407 is a wasteful number, since it uses less digits than its factorization.

53660407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171752.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 53660407 is about 7325.3264091097. The cubic root of 53660407 is about 377.1823141917.

The spelling of 53660407 in words is "fifty-three million, six hundred sixty thousand, four hundred seven".