53857390 has 16 divisors (see below), whose sum is σ = 97027632. Its totient is φ = 21524224.

The previous prime is 53857373. The next prime is 53857451. The reversal of 53857390 is 9375835.

It is a happy number.

It is a super-2 number, since 2×53857390² = 5801236915224200, which contains 22 as substring.

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, 18942 + ... + 21598.

It is an arithmetic number, because the mean of its divisors is an integer number (6064227).

Almost surely, 2^53857390 is an apocalyptic number.

53857390 is a deficient number, since it is larger than the sum of its proper divisors (43170242).

53857390 is a wasteful number, since it uses less digits than its factorization.

53857390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4691.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 53857390 is about 7338.7594319476. The cubic root of 53857390 is about 377.6432858112.

The spelling of 53857390 in words is "fifty-three million, eight hundred fifty-seven thousand, three hundred ninety".