97742281 has 16 divisors (see below), whose sum is σ = 122863104. Its totient is φ = 75685824.

The previous prime is 97742269. The next prime is 97742297. The reversal of 97742281 is 18224779.

It is a cyclic number.

It is not a de Polignac number, because 97742281 - 2¹⁷ = 97611209 is a prime.

It is a super-2 number, since 2×97742281² = 19107106990165922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97742201) 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, 7150 + ... + 15703.

It is an arithmetic number, because the mean of its divisors is an integer number (7678944).

Almost surely, 2^97742281 is an apocalyptic number.

97742281 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

97742281 is a deficient number, since it is larger than the sum of its proper divisors (25120823).

97742281 is a wasteful number, since it uses less digits than its factorization.

97742281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22920.

The product of its digits is 56448, while the sum is 40.

The square root of 97742281 is about 9886.4695923267. The cubic root of 97742281 is about 460.6391257626.

The spelling of 97742281 in words is "ninety-seven million, seven hundred forty-two thousand, two hundred eighty-one".