55142192 has 40 divisors (see below), whose sum is σ = 123209376. Its totient is φ = 23417856.

The previous prime is 55142189. The next prime is 55142239. The reversal of 55142192 is 29124155.

It is a super-2 number, since 2×55142192² = 6081322677129728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10478 + ... + 14834.

Almost surely, 2^55142192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55142192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61604688).

55142192 is an abundant number, since it is smaller than the sum of its proper divisors (68067184).

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

55142192 is a wasteful number, since it uses less digits than its factorization.

55142192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485 (or 4479 counting only the distinct ones).

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

The square root of 55142192 is about 7425.7788817066. The cubic root of 55142192 is about 380.6226909749.

The spelling of 55142192 in words is "fifty-five million, one hundred forty-two thousand, one hundred ninety-two".