53538490 has 8 divisors (see below), whose sum is σ = 96369300. Its totient is φ = 21415392.

The previous prime is 53538479. The next prime is 53538539. The reversal of 53538490 is 9483535.

It is a Cunningham number, because it is equal to 7317²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 53538489 + 1 = 7317^2 + 1^2 .

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

It is a super-2 number, since 2×53538490² = 5732739822960200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2676915 + ... + 2676934.

Almost surely, 2^53538490 is an apocalyptic number.

53538490 is a deficient number, since it is larger than the sum of its proper divisors (42830810).

53538490 is a wasteful number, since it uses less digits than its factorization.

53538490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5353856.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 53538490 is about 7317.0000683340. Note that the first 4 decimals coincide. The cubic root of 53538490 is about 376.8964435415.

The spelling of 53538490 in words is "fifty-three million, five hundred thirty-eight thousand, four hundred ninety".