97021745 has 8 divisors (see below), whose sum is σ = 118021416. Its totient is φ = 76553856.

The previous prime is 97021721. The next prime is 97021787. The reversal of 97021745 is 54712079.

It can be written as a sum of positive squares in 4 ways, for example, as 13719616 + 83302129 = 3704^2 + 9127^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 97021745 - 2⁶ = 97021681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132542 + ... + 133271.

It is an arithmetic number, because the mean of its divisors is an integer number (14752677).

Almost surely, 2^97021745 is an apocalyptic number.

It is an amenable number.

97021745 is a deficient number, since it is larger than the sum of its proper divisors (20999671).

97021745 is a wasteful number, since it uses less digits than its factorization.

97021745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265891.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 97021745 is about 9849.9616750523. The cubic root of 97021745 is about 459.5044205973.

The spelling of 97021745 in words is "ninety-seven million, twenty-one thousand, seven hundred forty-five".