55455142 has 8 divisors (see below), whose sum is σ = 83642832. Its totient is φ = 27574200.

The previous prime is 55455137. The next prime is 55455143. The reversal of 55455142 is 24155455.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55455143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76234 + ... + 76957.

It is an arithmetic number, because the mean of its divisors is an integer number (10455354).

Almost surely, 2^55455142 is an apocalyptic number.

55455142 is a deficient number, since it is larger than the sum of its proper divisors (28187690).

55455142 is a wasteful number, since it uses less digits than its factorization.

55455142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153374.

The product of its digits is 20000, while the sum is 31.

The square root of 55455142 is about 7446.8209324516. The cubic root of 55455142 is about 381.3413858866.

It can be divided in two parts, 554 and 55142, that added together give a square (55696 = 236²).

The spelling of 55455142 in words is "fifty-five million, four hundred fifty-five thousand, one hundred forty-two".