55249651 has 2 divisors, whose sum is σ = 55249652. Its totient is φ = 55249650.

The previous prime is 55249639. The next prime is 55249681. The reversal of 55249651 is 15694255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55249651 - 2⁵ = 55249619 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55249651.

It is not a weakly prime, because it can be changed into another prime (55249681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27624825 + 27624826.

It is an arithmetic number, because the mean of its divisors is an integer number (27624826).

Almost surely, 2^55249651 is an apocalyptic number.

55249651 is a deficient number, since it is larger than the sum of its proper divisors (1).

55249651 is an equidigital number, since it uses as much as digits as its factorization.

55249651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 37.

The square root of 55249651 is about 7433.0108973417. The cubic root of 55249651 is about 380.8697781992.

The spelling of 55249651 in words is "fifty-five million, two hundred forty-nine thousand, six hundred fifty-one".