53801613 has 6 divisors (see below), whose sum is σ = 77713454. Its totient is φ = 35867736.

The previous prime is 53801611. The next prime is 53801621. The reversal of 53801613 is 31610835.

It can be written as a sum of positive squares in only one way, i.e., 37785609 + 16016004 = 6147^2 + 4002^2 .

It is not a de Polignac number, because 53801613 - 2¹ = 53801611 is a prime.

It is a super-2 number, since 2×53801613² = 5789227122803538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53801611) 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, 2988970 + ... + 2988987.

Almost surely, 2^53801613 is an apocalyptic number.

It is an amenable number.

53801613 is a deficient number, since it is larger than the sum of its proper divisors (23911841).

53801613 is a wasteful number, since it uses less digits than its factorization.

53801613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5977963 (or 5977960 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 53801613 is about 7334.9582820900. The cubic root of 53801613 is about 377.5128729730.

The spelling of 53801613 in words is "fifty-three million, eight hundred one thousand, six hundred thirteen".