55142136 has 96 divisors (see below), whose sum is σ = 175350240. Its totient is φ = 15323904.

The previous prime is 55142093. The next prime is 55142141. The reversal of 55142136 is 63124155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17170 + ... + 20126.

It is an arithmetic number, because the mean of its divisors is an integer number (1826565).

Almost surely, 2^55142136 is an apocalyptic number.

55142136 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55142136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87675120).

55142136 is an abundant number, since it is smaller than the sum of its proper divisors (120208104).

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

55142136 is a wasteful number, since it uses less digits than its factorization.

55142136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013 (or 3006 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 55142136 is about 7425.7751110574. The cubic root of 55142136 is about 380.6225621270.

It can be divided in two parts, 55142 and 136, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 55142136 in words is "fifty-five million, one hundred forty-two thousand, one hundred thirty-six".