55755121 has 16 divisors (see below), whose sum is σ = 60963840. Its totient is φ = 50782720.

The previous prime is 55755107. The next prime is 55755127. The reversal of 55755121 is 12155755.

It is a cyclic number.

It is not a de Polignac number, because 55755121 - 2⁹ = 55754609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55755127) 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, 116160 + ... + 116638.

It is an arithmetic number, because the mean of its divisors is an integer number (3810240).

Almost surely, 2^55755121 is an apocalyptic number.

It is an amenable number.

55755121 is a deficient number, since it is larger than the sum of its proper divisors (5208719).

55755121 is a wasteful number, since it uses less digits than its factorization.

55755121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704.

The product of its digits is 8750, while the sum is 31.

The square root of 55755121 is about 7466.9351811838. The cubic root of 55755121 is about 382.0277590091.

The spelling of 55755121 in words is "fifty-five million, seven hundred fifty-five thousand, one hundred twenty-one".