55529779 has 4 divisors (see below), whose sum is σ = 55566784. Its totient is φ = 55492776.

The previous prime is 55529777. The next prime is 55529807. The reversal of 55529779 is 97792555.

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

It is a cyclic number.

It is not a de Polignac number, because 55529779 - 2¹ = 55529777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55529777) 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, 16152 + ... + 19285.

It is an arithmetic number, because the mean of its divisors is an integer number (13891696).

Almost surely, 2^55529779 is an apocalyptic number.

55529779 is a deficient number, since it is larger than the sum of its proper divisors (37005).

55529779 is a wasteful number, since it uses less digits than its factorization.

55529779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37004.

The product of its digits is 992250, while the sum is 49.

The square root of 55529779 is about 7451.8305804681. The cubic root of 55529779 is about 381.5123914746.

The spelling of 55529779 in words is "fifty-five million, five hundred twenty-nine thousand, seven hundred seventy-nine".