55154642 has 16 divisors (see below), whose sum is σ = 87712512. Its totient is φ = 25965360.

The previous prime is 55154633. The next prime is 55154651. The reversal of 55154642 is 24645155.

It is an interprime number because it is at equal distance from previous prime (55154633) and next prime (55154651).

It is a junction number, because it is equal to n+sod(n) for n = 55154599 and 55154608.

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, 9728 + ... + 14315.

It is an arithmetic number, because the mean of its divisors is an integer number (5482032).

Almost surely, 2^55154642 is an apocalyptic number.

55154642 is a deficient number, since it is larger than the sum of its proper divisors (32557870).

55154642 is a wasteful number, since it uses less digits than its factorization.

55154642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24113.

The product of its digits is 24000, while the sum is 32.

The square root of 55154642 is about 7426.6171302956. The cubic root of 55154642 is about 380.6513344736.

Adding to 55154642 its reverse (24645155), we get a palindrome (79799797).

The spelling of 55154642 in words is "fifty-five million, one hundred fifty-four thousand, six hundred forty-two".