53551501 has 4 divisors (see below), whose sum is σ = 53596512. Its totient is φ = 53506492.

The previous prime is 53551489. The next prime is 53551523. The reversal of 53551501 is 10515535.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10515535 = 5 ⋅2103107.

It is a cyclic number.

It is not a de Polignac number, because 53551501 - 2⁹ = 53550989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53551541) 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 3 ways as a sum of consecutive naturals, for example, 20671 + ... + 23116.

It is an arithmetic number, because the mean of its divisors is an integer number (13399128).

Almost surely, 2^53551501 is an apocalyptic number.

It is an amenable number.

53551501 is a deficient number, since it is larger than the sum of its proper divisors (45011).

53551501 is a wasteful number, since it uses less digits than its factorization.

53551501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45010.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 53551501 is about 7317.8891082060. The cubic root of 53551501 is about 376.9269723719.

The spelling of 53551501 in words is "fifty-three million, five hundred fifty-one thousand, five hundred one".