97783501 has 2 divisors, whose sum is σ = 97783502. Its totient is φ = 97783500.

The previous prime is 97783487. The next prime is 97783513. The reversal of 97783501 is 10538779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66814276 + 30969225 = 8174^2 + 5565^2 .

It is an emirp because it is prime and its reverse (10538779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97783501 - 2¹³ = 97775309 is a prime.

It is a super-2 number, since 2×97783501² = 19123226135634002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97783531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48891750 + 48891751.

It is an arithmetic number, because the mean of its divisors is an integer number (48891751).

Almost surely, 2^97783501 is an apocalyptic number.

It is an amenable number.

97783501 is a deficient number, since it is larger than the sum of its proper divisors (1).

97783501 is an equidigital number, since it uses as much as digits as its factorization.

97783501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 97783501 is about 9888.5540398989. The cubic root of 97783501 is about 460.7038704362.

The spelling of 97783501 in words is "ninety-seven million, seven hundred eighty-three thousand, five hundred one".