55511542 has 4 divisors (see below), whose sum is σ = 83267316. Its totient is φ = 27755770.

The previous prime is 55511537. The next prime is 55511543. The reversal of 55511542 is 24511555.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55511542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55511543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13877884 + ... + 13877887.

It is an arithmetic number, because the mean of its divisors is an integer number (20816829).

Almost surely, 2^55511542 is an apocalyptic number.

55511542 is a deficient number, since it is larger than the sum of its proper divisors (27755774).

55511542 is a wasteful number, since it uses less digits than its factorization.

55511542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27755773.

The product of its digits is 5000, while the sum is 28.

The square root of 55511542 is about 7450.6068209241. The cubic root of 55511542 is about 381.4706216745.

The spelling of 55511542 in words is "fifty-five million, five hundred eleven thousand, five hundred forty-two".