97181000 has 64 divisors (see below), whose sum is σ = 259908480. Its totient is φ = 33316800.

The previous prime is 97180997. The next prime is 97181009. The reversal of 97181000 is 18179.

It is a super-2 number, since 2×97181000² = 18888293522000000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97181009) 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, 59 + ... + 13941.

It is an arithmetic number, because the mean of its divisors is an integer number (4061070).

Almost surely, 2^97181000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97181000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129954240).

97181000 is an abundant number, since it is smaller than the sum of its proper divisors (162727480).

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

97181000 is a wasteful number, since it uses less digits than its factorization.

97181000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13911 (or 13897 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 97181000 is about 9858.0424020188. The cubic root of 97181000 is about 459.7556988847.

Adding to 97181000 its reverse (18179), we get a palindrome (97199179).

The spelling of 97181000 in words is "ninety-seven million, one hundred eighty-one thousand".