55140270 has 32 divisors (see below), whose sum is σ = 132789888. Its totient is φ = 14653728.

The previous prime is 55140251. The next prime is 55140287. The reversal of 55140270 is 7204155.

It is a self number, because there is not a number n which added to its sum of digits gives 55140270.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6217 + ... + 12203.

It is an arithmetic number, because the mean of its divisors is an integer number (4149684).

Almost surely, 2^55140270 is an apocalyptic number.

55140270 is an abundant number, since it is smaller than the sum of its proper divisors (77649618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55140270 is a wasteful number, since it uses less digits than its factorization.

55140270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6304.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 55140270 is about 7425.6494665450. The cubic root of 55140270 is about 380.6182686788.

The spelling of 55140270 in words is "fifty-five million, one hundred forty thousand, two hundred seventy".