55401142 has 4 divisors (see below), whose sum is σ = 83101716. Its totient is φ = 27700570.

The previous prime is 55401121. The next prime is 55401149. The reversal of 55401142 is 24110455.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55401149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13850284 + ... + 13850287.

It is an arithmetic number, because the mean of its divisors is an integer number (20775429).

Almost surely, 2^55401142 is an apocalyptic number.

55401142 is a deficient number, since it is larger than the sum of its proper divisors (27700574).

55401142 is a wasteful number, since it uses less digits than its factorization.

55401142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27700573.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 55401142 is about 7443.1943411414. The cubic root of 55401142 is about 381.2175673566.

Adding to 55401142 its reverse (24110455), we get a palindrome (79511597).

The spelling of 55401142 in words is "fifty-five million, four hundred one thousand, one hundred forty-two".