55151892 has 18 divisors (see below), whose sum is σ = 139411818. Its totient is φ = 18383952.

The previous prime is 55151849. The next prime is 55151897. The reversal of 55151892 is 29815155.

It is a happy number.

55151892 is a `hidden beast` number, since 5 + 51 + 518 + 92 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40908816 + 14243076 = 6396^2 + 3774^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1531997 = 55151892 / (5 + 5 + 1 + 5 + 1 + 8 + 9 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55151897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 765963 + ... + 766034.

It is an arithmetic number, because the mean of its divisors is an integer number (7745101).

Almost surely, 2^55151892 is an apocalyptic number.

It is an amenable number.

55151892 is an abundant number, since it is smaller than the sum of its proper divisors (84259926).

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

55151892 is a wasteful number, since it uses less digits than its factorization.

55151892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532007 (or 1532002 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 55151892 is about 7426.4319831262. The cubic root of 55151892 is about 380.6450079673.

The spelling of 55151892 in words is "fifty-five million, one hundred fifty-one thousand, eight hundred ninety-two".