53490069 has 6 divisors (see below), whose sum is σ = 77263446. Its totient is φ = 35660040.

The previous prime is 53490061. The next prime is 53490071. The reversal of 53490069 is 96009435.

It can be written as a sum of positive squares in only one way, i.e., 31979025 + 21511044 = 5655^2 + 4638^2 .

It is not a de Polignac number, because 53490069 - 2³ = 53490061 is a prime.

It is a super-2 number, since 2×53490069² = 5722374963249522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53490061) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2971662 + ... + 2971679.

It is an arithmetic number, because the mean of its divisors is an integer number (12877241).

Almost surely, 2^53490069 is an apocalyptic number.

It is an amenable number.

53490069 is a deficient number, since it is larger than the sum of its proper divisors (23773377).

53490069 is a wasteful number, since it uses less digits than its factorization.

53490069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5943347 (or 5943344 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 53490069 is about 7313.6905184729. The cubic root of 53490069 is about 376.7827857025.

The spelling of 53490069 in words is "fifty-three million, four hundred ninety thousand, sixty-nine".