55089451 has 2 divisors, whose sum is σ = 55089452. Its totient is φ = 55089450.

The previous prime is 55089443. The next prime is 55089457. The reversal of 55089451 is 15498055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55089451 - 2³ = 55089443 is a prime.

It is a super-2 number, since 2×55089451² = 6069695222962802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55089451.

It is not a weakly prime, because it can be changed into another prime (55089457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27544725 + 27544726.

It is an arithmetic number, because the mean of its divisors is an integer number (27544726).

Almost surely, 2^55089451 is an apocalyptic number.

55089451 is a deficient number, since it is larger than the sum of its proper divisors (1).

55089451 is an equidigital number, since it uses as much as digits as its factorization.

55089451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 55089451 is about 7422.2268221875. The cubic root of 55089451 is about 380.5013028321.

The spelling of 55089451 in words is "fifty-five million, eighty-nine thousand, four hundred fifty-one".