55146279 has 8 divisors (see below), whose sum is σ = 74414592. Its totient is φ = 36321080.

The previous prime is 55146277. The next prime is 55146331. The reversal of 55146279 is 97264155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55146279 - 2¹ = 55146277 is a prime.

It is a super-2 number, since 2×55146279² = 6082224175091682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55146277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110487 + ... + 110984.

It is an arithmetic number, because the mean of its divisors is an integer number (9301824).

Almost surely, 2^55146279 is an apocalyptic number.

55146279 is a deficient number, since it is larger than the sum of its proper divisors (19268313).

55146279 is a wasteful number, since it uses less digits than its factorization.

55146279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221557.

The product of its digits is 75600, while the sum is 39.

The square root of 55146279 is about 7426.0540665955. The cubic root of 55146279 is about 380.6320943401.

The spelling of 55146279 in words is "fifty-five million, one hundred forty-six thousand, two hundred seventy-nine".