55722755 has 16 divisors (see below), whose sum is σ = 73142784. Its totient is φ = 40416480.

The previous prime is 55722743. The next prime is 55722757.

55722755 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55722755 - 2¹⁶ = 55657219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55722757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23222 + ... + 25508.

It is an arithmetic number, because the mean of its divisors is an integer number (4571424).

Almost surely, 2^55722755 is an apocalyptic number.

55722755 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55722755 is a deficient number, since it is larger than the sum of its proper divisors (17420029).

55722755 is a wasteful number, since it uses less digits than its factorization.

55722755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746.

The product of its digits is 122500, while the sum is 38.

The square root of 55722755 is about 7464.7675784314. The cubic root of 55722755 is about 381.9538219812.

The spelling of 55722755 in words is "fifty-five million, seven hundred twenty-two thousand, seven hundred fifty-five".