2261321054 has 4 divisors (see below), whose sum is σ = 3391981584. Its totient is φ = 1130660526.

The previous prime is 2261321033. The next prime is 2261321063. The reversal of 2261321054 is 4501231622.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4501231622 = 2 ⋅2250615811.

It is a super-2 number, since 2×2261321054² = 10227145818527341832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565330262 + ... + 565330265.

It is an arithmetic number, because the mean of its divisors is an integer number (847995396).

Almost surely, 2^2261321054 is an apocalyptic number.

2261321054 is a deficient number, since it is larger than the sum of its proper divisors (1130660530).

2261321054 is a wasteful number, since it uses less digits than its factorization.

2261321054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130660529.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2261321054 is about 47553.3495560513. The cubic root of 2261321054 is about 1312.5647661343.

Adding to 2261321054 its reverse (4501231622), we get a palindrome (6762552676).

The spelling of 2261321054 in words is "two billion, two hundred sixty-one million, three hundred twenty-one thousand, fifty-four".