55140933 has 8 divisors (see below), whose sum is σ = 74618848. Its totient is φ = 36211824.

The previous prime is 55140931. The next prime is 55140937. The reversal of 55140933 is 33904155.

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

It is not a de Polignac number, because 55140933 - 2¹ = 55140931 is a prime.

It is a super-2 number, since 2×55140933² = 6081044984220978, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55140933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55140931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136966 + ... + 137367.

It is an arithmetic number, because the mean of its divisors is an integer number (9327356).

Almost surely, 2^55140933 is an apocalyptic number.

It is an amenable number.

55140933 is a deficient number, since it is larger than the sum of its proper divisors (19477915).

55140933 is a wasteful number, since it uses less digits than its factorization.

55140933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274403.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 55140933 is about 7425.6941089706. The cubic root of 55140933 is about 380.6197941755.

The spelling of 55140933 in words is "fifty-five million, one hundred forty thousand, nine hundred thirty-three".