55251473 has 2 divisors, whose sum is σ = 55251474. Its totient is φ = 55251472.

The previous prime is 55251457. The next prime is 55251503. The reversal of 55251473 is 37415255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55100929 + 150544 = 7423^2 + 388^2 .

It is a cyclic number.

It is not a de Polignac number, because 55251473 - 2⁴ = 55251457 is a prime.

It is not a weakly prime, because it can be changed into another prime (55251433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27625736 + 27625737.

It is an arithmetic number, because the mean of its divisors is an integer number (27625737).

Almost surely, 2^55251473 is an apocalyptic number.

It is an amenable number.

55251473 is a deficient number, since it is larger than the sum of its proper divisors (1).

55251473 is an equidigital number, since it uses as much as digits as its factorization.

55251473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 32.

The square root of 55251473 is about 7433.1334577014. The cubic root of 55251473 is about 380.8739648749.

It can be divided in two parts, 552 and 51473, that added together give a palindrome (52025).

The spelling of 55251473 in words is "fifty-five million, two hundred fifty-one thousand, four hundred seventy-three".