1226261 has 8 divisors (see below), whose sum is σ = 1323864. Its totient is φ = 1131520.

The previous prime is 1226257. The next prime is 1226263. The reversal of 1226261 is 1626221.

1226261 = T₉₆ + T₉₇ + ... + T₂₀₁.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 256036 + 970225 = 506^2 + 985^2 .

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

It is not a de Polignac number, because 1226261 - 2² = 1226257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226263) 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, 221 + ... + 1581.

It is an arithmetic number, because the mean of its divisors is an integer number (165483).

2^1226261 is an apocalyptic number.

It is an amenable number.

1226261 is a deficient number, since it is larger than the sum of its proper divisors (97603).

1226261 is a wasteful number, since it uses less digits than its factorization.

1226261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431.

The product of its digits is 288, while the sum is 20.

The square root of 1226261 is about 1107.3666962664. The cubic root of 1226261 is about 107.0354498663.

The spelling of 1226261 in words is "one million, two hundred twenty-six thousand, two hundred sixty-one".