10551261 has 8 divisors (see below), whose sum is σ = 16078144. Its totient is φ = 6029280.

The previous prime is 10551259. The next prime is 10551263. The reversal of 10551261 is 16215501.

It is an interprime number because it is at equal distance from previous prime (10551259) and next prime (10551263).

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

It is not a de Polignac number, because 10551261 - 2¹ = 10551259 is a prime.

It is a super-2 number, since 2×10551261² = 222658217380242, which contains 22 as substring.

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: 502441 = 10551261 / (1 + 0 + 5 + 5 + 1 + 2 + 6 + 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 (10551263) 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, 251200 + ... + 251241.

It is an arithmetic number, because the mean of its divisors is an integer number (2009768).

Almost surely, 2^10551261 is an apocalyptic number.

It is an amenable number.

10551261 is a deficient number, since it is larger than the sum of its proper divisors (5526883).

10551261 is an equidigital number, since it uses as much as digits as its factorization.

10551261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502451.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 10551261 is about 3248.2704628771. The cubic root of 10551261 is about 219.3317255410.

Adding to 10551261 its reverse (16215501), we get a palindrome (26766762).

The spelling of 10551261 in words is "ten million, five hundred fifty-one thousand, two hundred sixty-one".