55533451 has 2 divisors, whose sum is σ = 55533452. Its totient is φ = 55533450.

The previous prime is 55533449. The next prime is 55533479. The reversal of 55533451 is 15433555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55533451 - 2¹ = 55533449 is a prime.

Together with 55533449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55543451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27766725 + 27766726.

It is an arithmetic number, because the mean of its divisors is an integer number (27766726).

Almost surely, 2^55533451 is an apocalyptic number.

55533451 is a deficient number, since it is larger than the sum of its proper divisors (1).

55533451 is an equidigital number, since it uses as much as digits as its factorization.

55533451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22500, while the sum is 31.

The square root of 55533451 is about 7452.0769588082. The cubic root of 55533451 is about 381.5208006720.

The spelling of 55533451 in words is "fifty-five million, five hundred thirty-three thousand, four hundred fifty-one".