53490405 has 8 divisors (see below), whose sum is σ = 85584672. Its totient is φ = 28528208.

The previous prime is 53490383. The next prime is 53490421. The reversal of 53490405 is 50409435.

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 53490405 - 2¹⁴ = 53474021 is a prime.

It is a super-2 number, since 2×53490405² = 5722446854128050, 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, 1782999 + ... + 1783028.

It is an arithmetic number, because the mean of its divisors is an integer number (10698084).

Almost surely, 2^53490405 is an apocalyptic number.

It is an amenable number.

53490405 is a deficient number, since it is larger than the sum of its proper divisors (32094267).

53490405 is a wasteful number, since it uses less digits than its factorization.

53490405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566035.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 53490405 is about 7313.7134890560. The cubic root of 53490405 is about 376.7835746262.

The spelling of 53490405 in words is "fifty-three million, four hundred ninety thousand, four hundred five".