53691265 has 8 divisors (see below), whose sum is σ = 65337408. Its totient is φ = 42347760.

The previous prime is 53691247. The next prime is 53691277. The reversal of 53691265 is 56219635.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53691265 - 2⁵ = 53691233 is a prime.

It is a Duffinian number.

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, 75267 + ... + 75976.

It is an arithmetic number, because the mean of its divisors is an integer number (8167176).

Almost surely, 2^53691265 is an apocalyptic number.

It is an amenable number.

53691265 is a deficient number, since it is larger than the sum of its proper divisors (11646143).

53691265 is a wasteful number, since it uses less digits than its factorization.

53691265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151319.

The product of its digits is 48600, while the sum is 37.

The square root of 53691265 is about 7327.4323606568. The cubic root of 53691265 is about 377.2546012661.

It can be divided in two parts, 53691 and 265, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 53691265 in words is "fifty-three million, six hundred ninety-one thousand, two hundred sixty-five".