2045123551 has 8 divisors (see below), whose sum is σ = 2055744000. Its totient is φ = 2034530520.

The previous prime is 2045123527. The next prime is 2045123567. The reversal of 2045123551 is 1553215402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2045123551 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 (2045123581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152100 + ... + 164998.

It is an arithmetic number, because the mean of its divisors is an integer number (256968000).

Almost surely, 2^2045123551 is an apocalyptic number.

2045123551 is a deficient number, since it is larger than the sum of its proper divisors (10620449).

2045123551 is a wasteful number, since it uses less digits than its factorization.

2045123551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13709.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2045123551 is about 45223.0422572387. The cubic root of 2045123551 is about 1269.3260215813.

Adding to 2045123551 its reverse (1553215402), we get a palindrome (3598338953).

The spelling of 2045123551 in words is "two billion, forty-five million, one hundred twenty-three thousand, five hundred fifty-one".