55645351 has 2 divisors, whose sum is σ = 55645352. Its totient is φ = 55645350.

The previous prime is 55645339. The next prime is 55645361. The reversal of 55645351 is 15354655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55645351 - 2¹¹ = 55643303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55645361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27822675 + 27822676.

It is an arithmetic number, because the mean of its divisors is an integer number (27822676).

Almost surely, 2^55645351 is an apocalyptic number.

55645351 is a deficient number, since it is larger than the sum of its proper divisors (1).

55645351 is an equidigital number, since it uses as much as digits as its factorization.

55645351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45000, while the sum is 34.

The square root of 55645351 is about 7459.5811544617. The cubic root of 55645351 is about 381.7768837711.

The spelling of 55645351 in words is "fifty-five million, six hundred forty-five thousand, three hundred fifty-one".