103161778 has 4 divisors (see below), whose sum is σ = 154742670. Its totient is φ = 51580888.

The previous prime is 103161767. The next prime is 103161823. The reversal of 103161778 is 877161301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 877161301 = 6163 ⋅142327.

It can be written as a sum of positive squares in only one way, i.e., 69672409 + 33489369 = 8347^2 + 5787^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25790443 + ... + 25790446.

Almost surely, 2^103161778 is an apocalyptic number.

103161778 is a deficient number, since it is larger than the sum of its proper divisors (51580892).

103161778 is an equidigital number, since it uses as much as digits as its factorization.

103161778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51580891.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 103161778 is about 10156.8586679150. The cubic root of 103161778 is about 469.0001045640. Note that the first 3 decimals are identical.

The spelling of 103161778 in words is "one hundred three million, one hundred sixty-one thousand, seven hundred seventy-eight".