53225551 has 4 divisors (see below), whose sum is σ = 53305312. Its totient is φ = 53145792.

The previous prime is 53225533. The next prime is 53225561. The reversal of 53225551 is 15552235.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53225551 - 2⁷ = 53225423 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 (53225561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38871 + ... + 40216.

It is an arithmetic number, because the mean of its divisors is an integer number (13326328).

Almost surely, 2^53225551 is an apocalyptic number.

53225551 is a deficient number, since it is larger than the sum of its proper divisors (79761).

53225551 is an equidigital number, since it uses as much as digits as its factorization.

53225551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79760.

The product of its digits is 7500, while the sum is 28.

The square root of 53225551 is about 7295.5843494541. The cubic root of 53225551 is about 376.1606728998.

Adding to 53225551 its reverse (15552235), we get a palindrome (68777786).

The spelling of 53225551 in words is "fifty-three million, two hundred twenty-five thousand, five hundred fifty-one".