53424621 has 6 divisors (see below), whose sum is σ = 77168910. Its totient is φ = 35616408.

The previous prime is 53424617. The next prime is 53424629. The reversal of 53424621 is 12642435.

53424621 is a `hidden beast` number, since 5 + 34 + 2 + 4 + 621 = 666.

It can be written as a sum of positive squares in only one way, i.e., 33524100 + 19900521 = 5790^2 + 4461^2 .

It is not a de Polignac number, because 53424621 - 2² = 53424617 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53424629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2968026 + ... + 2968043.

It is an arithmetic number, because the mean of its divisors is an integer number (12861485).

Almost surely, 2^53424621 is an apocalyptic number.

It is an amenable number.

53424621 is a deficient number, since it is larger than the sum of its proper divisors (23744289).

53424621 is a wasteful number, since it uses less digits than its factorization.

53424621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5936075 (or 5936072 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 53424621 is about 7309.2148005104. The cubic root of 53424621 is about 376.6290515948.

It can be divided in two parts, 53424 and 621, that added together give a palindrome (54045).

The spelling of 53424621 in words is "fifty-three million, four hundred twenty-four thousand, six hundred twenty-one".