55887442 has 8 divisors (see below), whose sum is σ = 90279756. Its totient is φ = 25794192.

The previous prime is 55887439. The next prime is 55887443. The reversal of 55887442 is 24478855.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54007801 + 1879641 = 7349^2 + 1371^2 .

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

It is not an unprimeable number, because it can be changed into a prime (55887443) 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, 1074733 + ... + 1074784.

Almost surely, 2^55887442 is an apocalyptic number.

55887442 is a deficient number, since it is larger than the sum of its proper divisors (34392314).

55887442 is a wasteful number, since it uses less digits than its factorization.

55887442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149532.

The product of its digits is 358400, while the sum is 43.

The square root of 55887442 is about 7475.7903929952. The cubic root of 55887442 is about 382.3297364017.

The spelling of 55887442 in words is "fifty-five million, eight hundred eighty-seven thousand, four hundred forty-two".