120055511 has 4 divisors (see below), whose sum is σ = 120212400. Its totient is φ = 119898624.

The previous prime is 120055499. The next prime is 120055517. The reversal of 120055511 is 115550021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115550021 = 73 ⋅1582877.

It is a cyclic number.

It is not a de Polignac number, because 120055511 - 2¹⁸ = 119793367 is a prime.

It is a super-2 number, since 2×120055511² = 28826651442942242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120055517) 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, 77291 + ... + 78828.

It is an arithmetic number, because the mean of its divisors is an integer number (30053100).

Almost surely, 2^120055511 is an apocalyptic number.

120055511 is a deficient number, since it is larger than the sum of its proper divisors (156889).

120055511 is an equidigital number, since it uses as much as digits as its factorization.

120055511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156888.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 120055511 is about 10956.9845760592. The cubic root of 120055511 is about 493.3184597516.

The spelling of 120055511 in words is "one hundred twenty million, fifty-five thousand, five hundred eleven".