53690505 has 32 divisors (see below), whose sum is σ = 99232128. Its totient is φ = 24499200.

The previous prime is 53690491. The next prime is 53690519. The reversal of 53690505 is 50509635.

It is an interprime number because it is at equal distance from previous prime (53690491) and next prime (53690519).

It is not a de Polignac number, because 53690505 - 2⁵ = 53690473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6766 + ... + 12375.

It is an arithmetic number, because the mean of its divisors is an integer number (3101004).

Almost surely, 2^53690505 is an apocalyptic number.

53690505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53690505 is a deficient number, since it is larger than the sum of its proper divisors (45541623).

53690505 is a wasteful number, since it uses less digits than its factorization.

53690505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19177.

The product of its (nonzero) digits is 20250, while the sum is 33.

The square root of 53690505 is about 7327.3805005609. The cubic root of 53690505 is about 377.2528212444.

The spelling of 53690505 in words is "fifty-three million, six hundred ninety thousand, five hundred five".