53957405 has 8 divisors (see below), whose sum is σ = 68557752. Its totient is φ = 40626688.

The previous prime is 53957377. The next prime is 53957411. The reversal of 53957405 is 50475935.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17825284 + 36132121 = 4222^2 + 6011^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 53957405 - 2¹⁰ = 53956381 is a prime.

It is a super-2 number, since 2×53957405² = 5822803108668050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317312 + ... + 317481.

It is an arithmetic number, because the mean of its divisors is an integer number (8569719).

Almost surely, 2^53957405 is an apocalyptic number.

It is an amenable number.

53957405 is a deficient number, since it is larger than the sum of its proper divisors (14600347).

53957405 is a wasteful number, since it uses less digits than its factorization.

53957405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634815.

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 53957405 is about 7345.5704339418. The cubic root of 53957405 is about 377.8769067205.

The spelling of 53957405 in words is "fifty-three million, nine hundred fifty-seven thousand, four hundred five".