2051611562 has 64 divisors (see below), whose sum is σ = 4157927424. Its totient is φ = 733199040.

The previous prime is 2051611553. The next prime is 2051611591. The reversal of 2051611562 is 2651161502.

It is a happy number.

It is a super-3 number, since 3×2051611562³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323183 + ... + 329469.

It is an arithmetic number, because the mean of its divisors is an integer number (64967616).

Almost surely, 2^2051611562 is an apocalyptic number.

2051611562 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2051611562 is an abundant number, since it is smaller than the sum of its proper divisors (2106315862).

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

2051611562 is a wasteful number, since it uses less digits than its factorization.

2051611562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6483.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 2051611562 is about 45294.7189195385. The cubic root of 2051611562 is about 1270.6668872320. Note that the first 3 decimals are identical.

The spelling of 2051611562 in words is "two billion, fifty-one million, six hundred eleven thousand, five hundred sixty-two".