35245721 has 4 divisors (see below), whose sum is σ = 40280832. Its totient is φ = 30210612.

The previous prime is 35245657. The next prime is 35245733. The reversal of 35245721 is 12754253.

It is a happy number.

35245721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12754253 = 2207 ⋅5779.

It is a cyclic number.

It is not a de Polignac number, because 35245721 - 2⁶ = 35245657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35245781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2517545 + ... + 2517558.

It is an arithmetic number, because the mean of its divisors is an integer number (10070208).

Almost surely, 2^35245721 is an apocalyptic number.

It is an amenable number.

35245721 is a deficient number, since it is larger than the sum of its proper divisors (5035111).

35245721 is an equidigital number, since it uses as much as digits as its factorization.

35245721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5035110.

The product of its digits is 8400, while the sum is 29.

The square root of 35245721 is about 5936.8106757753. The cubic root of 35245721 is about 327.8703415001.

Adding to 35245721 its reverse (12754253), we get a palindrome (47999974).

The spelling of 35245721 in words is "thirty-five million, two hundred forty-five thousand, seven hundred twenty-one".