55156279 has 8 divisors (see below), whose sum is σ = 59224608. Its totient is φ = 51179520.

The previous prime is 55156273. The next prime is 55156319. The reversal of 55156279 is 97265155.

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

It is not a de Polignac number, because 55156279 - 2¹⁹ = 54631991 is a prime.

It is a super-2 number, since 2×55156279² = 6084430226251682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55156273) 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, 21642 + ... + 24055.

It is an arithmetic number, because the mean of its divisors is an integer number (7403076).

Almost surely, 2^55156279 is an apocalyptic number.

55156279 is a deficient number, since it is larger than the sum of its proper divisors (4068329).

55156279 is a wasteful number, since it uses less digits than its factorization.

55156279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45785.

The product of its digits is 94500, while the sum is 40.

The square root of 55156279 is about 7426.7273411645. The cubic root of 55156279 is about 380.6551003704.

The spelling of 55156279 in words is "fifty-five million, one hundred fifty-six thousand, two hundred seventy-nine".