55878479 has 2 divisors, whose sum is σ = 55878480. Its totient is φ = 55878478.

The previous prime is 55878437. The next prime is 55878521. The reversal of 55878479 is 97487855.

It is a balanced prime because it is at equal distance from previous prime (55878437) and next prime (55878521).

It is a cyclic number.

It is not a de Polignac number, because 55878479 - 2²⁴ = 39101263 is a prime.

It is a Sophie Germain 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 55878479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55878409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27939239 + 27939240.

It is an arithmetic number, because the mean of its divisors is an integer number (27939240).

Almost surely, 2^55878479 is an apocalyptic number.

55878479 is a deficient number, since it is larger than the sum of its proper divisors (1).

55878479 is an equidigital number, since it uses as much as digits as its factorization.

55878479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2822400, while the sum is 53.

The square root of 55878479 is about 7475.1909005724. The cubic root of 55878479 is about 382.3092964811.

The spelling of 55878479 in words is "fifty-five million, eight hundred seventy-eight thousand, four hundred seventy-nine".