2051622775 has 12 divisors (see below), whose sum is σ = 2544593832. Its totient is φ = 1640923040.

The previous prime is 2051622773. The next prime is 2051622791. The reversal of 2051622775 is 5772261502.

It is not a de Polignac number, because 2051622775 - 2¹ = 2051622773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051622773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167769 + ... + 179581.

It is an arithmetic number, because the mean of its divisors is an integer number (212049486).

Almost surely, 2^2051622775 is an apocalyptic number.

2051622775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2051622775 is a deficient number, since it is larger than the sum of its proper divisors (492971057).

2051622775 is a wasteful number, since it uses less digits than its factorization.

2051622775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18770 (or 18765 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 2051622775 is about 45294.8426975964. The cubic root of 2051622775 is about 1270.6692021539.

The spelling of 2051622775 in words is "two billion, fifty-one million, six hundred twenty-two thousand, seven hundred seventy-five".