55090542 has 32 divisors (see below), whose sum is σ = 120677760. Its totient is φ = 16662240.

The previous prime is 55090507. The next prime is 55090547. The reversal of 55090542 is 24509055.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55090547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1384 + ... + 10587.

It is an arithmetic number, because the mean of its divisors is an integer number (3771180).

Almost surely, 2^55090542 is an apocalyptic number.

55090542 is an abundant number, since it is smaller than the sum of its proper divisors (65587218).

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

55090542 is a wasteful number, since it uses less digits than its factorization.

55090542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12048.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 55090542 is about 7422.3003172871. The cubic root of 55090542 is about 380.5038146510.

Adding to 55090542 its reverse (24509055), we get a palindrome (79599597).

The spelling of 55090542 in words is "fifty-five million, ninety thousand, five hundred forty-two".