55877029 has 4 divisors (see below), whose sum is σ = 60175276. Its totient is φ = 51578784.

The previous prime is 55877023. The next prime is 55877033. The reversal of 55877029 is 92077855.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34928100 + 20948929 = 5910^2 + 4577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55877029 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55877023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2149104 + ... + 2149129.

It is an arithmetic number, because the mean of its divisors is an integer number (15043819).

Almost surely, 2^55877029 is an apocalyptic number.

It is an amenable number.

55877029 is a deficient number, since it is larger than the sum of its proper divisors (4298247).

55877029 is a wasteful number, since it uses less digits than its factorization.

55877029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298246.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 55877029 is about 7475.0939124535. The cubic root of 55877029 is about 382.3059895832.

The spelling of 55877029 in words is "fifty-five million, eight hundred seventy-seven thousand, twenty-nine".