260253021 has 8 divisors (see below), whose sum is σ = 396576064. Its totient is φ = 148716000.

The previous prime is 260253011. The next prime is 260253061. The reversal of 260253021 is 120352062.

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

It is not a de Polignac number, because 260253021 - 2⁷ = 260252893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 12393001 = 260253021 / (2 + 6 + 0 + 2 + 5 + 3 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260253001) 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, 6196480 + ... + 6196521.

It is an arithmetic number, because the mean of its divisors is an integer number (49572008).

Almost surely, 2^260253021 is an apocalyptic number.

260253021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

260253021 is a deficient number, since it is larger than the sum of its proper divisors (136323043).

260253021 is a wasteful number, since it uses less digits than its factorization.

260253021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12393011.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 260253021 is about 16132.3594368586. The cubic root of 260253021 is about 638.4574022001.

The spelling of 260253021 in words is "two hundred sixty million, two hundred fifty-three thousand, twenty-one".