55921142 has 32 divisors (see below), whose sum is σ = 93139200. Its totient is φ = 25062048.

The previous prime is 55921133. The next prime is 55921147. The reversal of 55921142 is 24112955.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55921147) 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, 94973 + ... + 95559.

It is an arithmetic number, because the mean of its divisors is an integer number (2910600).

Almost surely, 2^55921142 is an apocalyptic number.

55921142 is a deficient number, since it is larger than the sum of its proper divisors (37218058).

55921142 is a wasteful number, since it uses less digits than its factorization.

55921142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740.

The product of its digits is 3600, while the sum is 29.

The square root of 55921142 is about 7478.0439955914. The cubic root of 55921142 is about 382.4065689467.

The spelling of 55921142 in words is "fifty-five million, nine hundred twenty-one thousand, one hundred forty-two".