97217003520 has 1800 divisors, whose sum is σ = 455603901984. Its totient is φ = 19619905536.

The previous prime is 97217003479. The next prime is 97217003537. The reversal of 97217003520 is 2530071279.

97217003520 is a `hidden beast` number, since 97 + 217 + 0 + 0 + 352 + 0 = 666.

It is a super-2 number, since 2×97217003520² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 4226826229 + ... + 4226826251.

Almost surely, 2^97217003520 is an apocalyptic number.

97217003520 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97217003520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227801950992).

97217003520 is an abundant number, since it is smaller than the sum of its proper divisors (358386898464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97217003520 is a wasteful number, since it uses less digits than its factorization.

97217003520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

Adding to 97217003520 its reverse (2530071279), we get a palindrome (99747074799).

The spelling of 97217003520 in words is "ninety-seven billion, two hundred seventeen million, three thousand, five hundred twenty".