10405551 has 16 divisors (see below), whose sum is σ = 15002624. Its totient is φ = 6377184.

The previous prime is 10405541. The next prime is 10405567. The reversal of 10405551 is 15550401.

It is not a de Polignac number, because 10405551 - 2¹⁴ = 10389167 is a prime.

It is a super-2 number, since 2×10405551² = 216550983227202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10405501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13950 + ... + 14676.

It is an arithmetic number, because the mean of its divisors is an integer number (937664).

Almost surely, 2^10405551 is an apocalyptic number.

10405551 is a deficient number, since it is larger than the sum of its proper divisors (4597073).

10405551 is a wasteful number, since it uses less digits than its factorization.

10405551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 10405551 is about 3225.7636305222. The cubic root of 10405551 is about 218.3174051016.

Adding to 10405551 its reverse (15550401), we get a palindrome (25955952).

The spelling of 10405551 in words is "ten million, four hundred five thousand, five hundred fifty-one".