55319742 has 24 divisors (see below), whose sum is σ = 122784480. Its totient is φ = 17989920.

The previous prime is 55319731. The next prime is 55319753. The reversal of 55319742 is 24791355.

It is an interprime number because it is at equal distance from previous prime (55319731) and next prime (55319753).

It is a junction number, because it is equal to n+sod(n) for n = 55319697 and 55319706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36742 + ... + 38217.

It is an arithmetic number, because the mean of its divisors is an integer number (5116020).

Almost surely, 2^55319742 is an apocalyptic number.

55319742 is an abundant number, since it is smaller than the sum of its proper divisors (67464738).

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

55319742 is a wasteful number, since it uses less digits than its factorization.

55319742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75008 (or 75005 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 55319742 is about 7437.7242487202. The cubic root of 55319742 is about 381.0307702431.

The spelling of 55319742 in words is "fifty-five million, three hundred nineteen thousand, seven hundred forty-two".