103057921 has 8 divisors (see below), whose sum is σ = 104515200. Its totient is φ = 101610432.

The previous prime is 103057883. The next prime is 103057937. The reversal of 103057921 is 129750301.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103057921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103057921.

It is not an unprimeable number, because it can be changed into a prime (103057951) 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, 20196 + ... + 24778.

It is an arithmetic number, because the mean of its divisors is an integer number (13064400).

Almost surely, 2^103057921 is an apocalyptic number.

It is an amenable number.

103057921 is a deficient number, since it is larger than the sum of its proper divisors (1457279).

103057921 is a wasteful number, since it uses less digits than its factorization.

103057921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4895.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 103057921 is about 10151.7447268930. The cubic root of 103057921 is about 468.8426647974.

The spelling of 103057921 in words is "one hundred three million, fifty-seven thousand, nine hundred twenty-one".