2261554 has 4 divisors (see below), whose sum is σ = 3392334. Its totient is φ = 1130776.

The previous prime is 2261549. The next prime is 2261557. The reversal of 2261554 is 4551622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1750329 + 511225 = 1323^2 + 715^2 .

It is a super-2 number, since 2×2261554² = 10229252989832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565387 + ... + 565390.

2^2261554 is an apocalyptic number.

2261554 is a deficient number, since it is larger than the sum of its proper divisors (1130780).

2261554 is a wasteful number, since it uses less digits than its factorization.

2261554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130779.

The product of its digits is 2400, while the sum is 25.

The square root of 2261554 is about 1503.8464017312. The cubic root of 2261554 is about 131.2609835102.

The spelling of 2261554 in words is "two million, two hundred sixty-one thousand, five hundred fifty-four".