2251645534 has 8 divisors (see below), whose sum is σ = 3441194280. Its totient is φ = 1104580776.

The previous prime is 2251645531. The next prime is 2251645541. The reversal of 2251645534 is 4355461522.

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

It is a super-2 number, since 2×2251645534² = 10139815221564290312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2251645493 and 2251645502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251645531) 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, 10620864 + ... + 10621075.

It is an arithmetic number, because the mean of its divisors is an integer number (430149285).

Almost surely, 2^2251645534 is an apocalyptic number.

2251645534 is a deficient number, since it is larger than the sum of its proper divisors (1189548746).

2251645534 is a wasteful number, since it uses less digits than its factorization.

2251645534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21241994.

The product of its digits is 144000, while the sum is 37.

The square root of 2251645534 is about 47451.5071836501. The cubic root of 2251645534 is about 1310.6900651177.

The spelling of 2251645534 in words is "two billion, two hundred fifty-one million, six hundred forty-five thousand, five hundred thirty-four".