97551137 has 2 divisors, whose sum is σ = 97551138. Its totient is φ = 97551136.

The previous prime is 97551121. The next prime is 97551143. The reversal of 97551137 is 73115579.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75498721 + 22052416 = 8689^2 + 4696^2 .

It is an emirp because it is prime and its reverse (73115579) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97551137 - 2⁴ = 97551121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97551137.

It is not a weakly prime, because it can be changed into another prime (97551107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48775568 + 48775569.

It is an arithmetic number, because the mean of its divisors is an integer number (48775569).

Almost surely, 2^97551137 is an apocalyptic number.

It is an amenable number.

97551137 is a deficient number, since it is larger than the sum of its proper divisors (1).

97551137 is an equidigital number, since it uses as much as digits as its factorization.

97551137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33075, while the sum is 38.

The square root of 97551137 is about 9876.7979122791. The cubic root of 97551137 is about 460.3386557846.

The spelling of 97551137 in words is "ninety-seven million, five hundred fifty-one thousand, one hundred thirty-seven".