18551053 has 2 divisors, whose sum is σ = 18551054. Its totient is φ = 18551052.

The previous prime is 18551009. The next prime is 18551059. The reversal of 18551053 is 35015581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11168964 + 7382089 = 3342^2 + 2717^2 .

It is a cyclic number.

It is not a de Polignac number, because 18551053 - 2¹⁷ = 18419981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18551059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9275526 + 9275527.

It is an arithmetic number, because the mean of its divisors is an integer number (9275527).

Almost surely, 2^18551053 is an apocalyptic number.

It is an amenable number.

18551053 is a deficient number, since it is larger than the sum of its proper divisors (1).

18551053 is an equidigital number, since it uses as much as digits as its factorization.

18551053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 18551053 is about 4307.0933354178. The cubic root of 18551053 is about 264.7216871599.

The spelling of 18551053 in words is "eighteen million, five hundred fifty-one thousand, fifty-three".