55499001979 has 2 divisors, whose sum is σ = 55499001980. Its totient is φ = 55499001978.

The previous prime is 55499001967. The next prime is 55499001991. The reversal of 55499001979 is 97910099455.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (55499001967) and next prime (55499001991).

It is a cyclic number.

It is not a de Polignac number, because 55499001979 - 2⁵ = 55499001947 is a prime.

It is not a weakly prime, because it can be changed into another prime (55499001949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27749500989 + 27749500990.

It is an arithmetic number, because the mean of its divisors is an integer number (27749500990).

Almost surely, 2^55499001979 is an apocalyptic number.

55499001979 is a deficient number, since it is larger than the sum of its proper divisors (1).

55499001979 is an equidigital number, since it uses as much as digits as its factorization.

55499001979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4592700, while the sum is 58.

The spelling of 55499001979 in words is "fifty-five billion, four hundred ninety-nine million, one thousand, nine hundred seventy-nine".