103475721 has 16 divisors (see below), whose sum is σ = 139664448. Its totient is φ = 68140800.

The previous prime is 103475707. The next prime is 103475777. The reversal of 103475721 is 127574301.

It is not a de Polignac number, because 103475721 - 2⁶ = 103475657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103475221) 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, 109965 + ... + 110901.

It is an arithmetic number, because the mean of its divisors is an integer number (8729028).

Almost surely, 2^103475721 is an apocalyptic number.

It is an amenable number.

103475721 is a deficient number, since it is larger than the sum of its proper divisors (36188727).

103475721 is a wasteful number, since it uses less digits than its factorization.

103475721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 103475721 is about 10172.3016569506. The cubic root of 103475721 is about 469.4753781088.

It can be divided in two parts, 103475 and 721, that added together give a triangular number (104196 = T₄₅₆).

The spelling of 103475721 in words is "one hundred three million, four hundred seventy-five thousand, seven hundred twenty-one".