55153730 has 32 divisors (see below), whose sum is σ = 101464704. Its totient is φ = 21580416.

The previous prime is 55153711. The next prime is 55153741. The reversal of 55153730 is 3735155.

It is a junction number, because it is equal to n+sod(n) for n = 55153693 and 55153702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176054 + ... + 176366.

It is an arithmetic number, because the mean of its divisors is an integer number (3170772).

Almost surely, 2^55153730 is an apocalyptic number.

55153730 is a deficient number, since it is larger than the sum of its proper divisors (46310974).

55153730 is a wasteful number, since it uses less digits than its factorization.

55153730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650.

The product of its (nonzero) digits is 7875, while the sum is 29.

The square root of 55153730 is about 7426.5557292732. Note that the first 3 decimals coincide. The cubic root of 55153730 is about 380.6492363974.

Adding to 55153730 its reverse (3735155), we get a palindrome (58888885).

The spelling of 55153730 in words is "fifty-five million, one hundred fifty-three thousand, seven hundred thirty".