103554721 has 2 divisors, whose sum is σ = 103554722. Its totient is φ = 103554720.

The previous prime is 103554713. The next prime is 103554727. The reversal of 103554721 is 127455301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77176225 + 26378496 = 8785^2 + 5136^2 .

It is a cyclic number.

It is not a de Polignac number, because 103554721 - 2³ = 103554713 is a prime.

It is a super-3 number, since 3×103554721³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103554721.

It is not a weakly prime, because it can be changed into another prime (103554727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51777360 + 51777361.

It is an arithmetic number, because the mean of its divisors is an integer number (51777361).

Almost surely, 2^103554721 is an apocalyptic number.

It is an amenable number.

103554721 is a deficient number, since it is larger than the sum of its proper divisors (1).

103554721 is an equidigital number, since it uses as much as digits as its factorization.

103554721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 103554721 is about 10176.1840097357. The cubic root of 103554721 is about 469.5948235849.

The spelling of 103554721 in words is "one hundred three million, five hundred fifty-four thousand, seven hundred twenty-one".