55135125030 has 32 divisors (see below), whose sum is σ = 135401612544. Its totient is φ = 14360776416.

The previous prime is 55135125029. The next prime is 55135125041. The reversal of 55135125030 is 3052153155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

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, 21368914 + ... + 21371493.

It is an arithmetic number, because the mean of its divisors is an integer number (4231300392).

Almost surely, 2^55135125030 is an apocalyptic number.

55135125030 is an abundant number, since it is smaller than the sum of its proper divisors (80266487514).

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

55135125030 is a wasteful number, since it uses less digits than its factorization.

55135125030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42740460.

The product of its (nonzero) digits is 11250, while the sum is 30.

Adding to 55135125030 its reverse (3052153155), we get a palindrome (58187278185).

The spelling of 55135125030 in words is "fifty-five billion, one hundred thirty-five million, one hundred twenty-five thousand, thirty".