3121551055 has 16 divisors (see below), whose sum is σ = 4353546240. Its totient is φ = 2104211232.

The previous prime is 3121551011. The next prime is 3121551077. The reversal of 3121551055 is 5501551213.

It is a cyclic number.

It is not a de Polignac number, because 3121551055 - 2¹³ = 3121542863 is a prime.

It is a super-2 number, since 2×3121551055² = 19488161977943226050, which contains 22 as substring.

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, 753759 + ... + 757888.

It is an arithmetic number, because the mean of its divisors is an integer number (272096640).

Almost surely, 2^3121551055 is an apocalyptic number.

3121551055 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3121551055 is a deficient number, since it is larger than the sum of its proper divisors (1231995185).

3121551055 is a wasteful number, since it uses less digits than its factorization.

3121551055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511718.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 3121551055 is about 55870.8426193842. The cubic root of 3121551055 is about 1461.4708163759.

The spelling of 3121551055 in words is "three billion, one hundred twenty-one million, five hundred fifty-one thousand, fifty-five".