10638551 has 8 divisors (see below), whose sum is σ = 13263744. Its totient is φ = 8289720.

The previous prime is 10638541. The next prime is 10638571. The reversal of 10638551 is 15583601.

10638551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 10638551 - 2¹⁰ = 10637527 is a prime.

It is a super-2 number, since 2×10638551² = 226357534759202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10638541) 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, 69005 + ... + 69158.

It is an arithmetic number, because the mean of its divisors is an integer number (1657968).

Almost surely, 2^10638551 is an apocalyptic number.

10638551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10638551 is a deficient number, since it is larger than the sum of its proper divisors (2625193).

10638551 is a wasteful number, since it uses less digits than its factorization.

10638551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138181.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 10638551 is about 3261.6791687718. The cubic root of 10638551 is about 219.9349049836.

The spelling of 10638551 in words is "ten million, six hundred thirty-eight thousand, five hundred fifty-one".