55551479 has 2 divisors, whose sum is σ = 55551480. Its totient is φ = 55551478.

The previous prime is 55551449. The next prime is 55551493. The reversal of 55551479 is 97415555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55551479 is a prime.

It is a super-3 number, since 3×55551479³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55551409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775739 + 27775740.

It is an arithmetic number, because the mean of its divisors is an integer number (27775740).

Almost surely, 2^55551479 is an apocalyptic number.

55551479 is a deficient number, since it is larger than the sum of its proper divisors (1).

55551479 is an equidigital number, since it uses as much as digits as its factorization.

55551479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157500, while the sum is 41.

The square root of 55551479 is about 7453.2864563225. The cubic root of 55551479 is about 381.5620809737.

The spelling of 55551479 in words is "fifty-five million, five hundred fifty-one thousand, four hundred seventy-nine".