30055250881 has 4 divisors (see below), whose sum is σ = 30694724352. Its totient is φ = 29415777412.

The previous prime is 30055250879. The next prime is 30055250887. The reversal of 30055250881 is 18805255003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18805255003 = 733 ⋅25655191.

It is a cyclic number.

It is not a de Polignac number, because 30055250881 - 2¹ = 30055250879 is a prime.

It is a super-2 number, since 2×30055250881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30055250881.

It is not an unprimeable number, because it can be changed into a prime (30055250887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319736665 + ... + 319736758.

It is an arithmetic number, because the mean of its divisors is an integer number (7673681088).

Almost surely, 2^30055250881 is an apocalyptic number.

It is an amenable number.

30055250881 is a deficient number, since it is larger than the sum of its proper divisors (639473471).

30055250881 is an equidigital number, since it uses as much as digits as its factorization.

30055250881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639473470.

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 30055250881 in words is "thirty billion, fifty-five million, two hundred fifty thousand, eight hundred eighty-one".