55140227 has 8 divisors (see below), whose sum is σ = 57265152. Its totient is φ = 53037000.

The previous prime is 55140221. The next prime is 55140229. The reversal of 55140227 is 72204155.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55140227 is a prime.

It is a super-2 number, since 2×55140227² = 6080889267223058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55140196 and 55140205.

It is not an unprimeable number, because it can be changed into a prime (55140221) 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, 149 + ... + 10502.

It is an arithmetic number, because the mean of its divisors is an integer number (7158144).

Almost surely, 2^55140227 is an apocalyptic number.

55140227 is a deficient number, since it is larger than the sum of its proper divisors (2124925).

55140227 is a wasteful number, since it uses less digits than its factorization.

55140227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10849.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 55140227 is about 7425.6465711748. The cubic root of 55140227 is about 380.6181697396.

The spelling of 55140227 in words is "fifty-five million, one hundred forty thousand, two hundred twenty-seven".