103661455 has 4 divisors (see below), whose sum is σ = 124393752. Its totient is φ = 82929160.

The previous prime is 103661447. The next prime is 103661477. The reversal of 103661455 is 554166301.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 103661455 - 2³ = 103661447 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10366141 + ... + 10366150.

It is an arithmetic number, because the mean of its divisors is an integer number (31098438).

Almost surely, 2^103661455 is an apocalyptic number.

103661455 is a deficient number, since it is larger than the sum of its proper divisors (20732297).

103661455 is an equidigital number, since it uses as much as digits as its factorization.

103661455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20732296.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 103661455 is about 10181.4269628574. The cubic root of 103661455 is about 469.7561055400.

The spelling of 103661455 in words is "one hundred three million, six hundred sixty-one thousand, four hundred fifty-five".