897022537 has 2 divisors, whose sum is σ = 897022538. Its totient is φ = 897022536.

The previous prime is 897022513. The next prime is 897022543. The reversal of 897022537 is 735220798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 895864761 + 1157776 = 29931^2 + 1076^2 .

It is a cyclic number.

It is not a de Polignac number, because 897022537 - 2²³ = 888633929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 897022493 and 897022502.

It is not a weakly prime, because it can be changed into another prime (897022037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448511268 + 448511269.

It is an arithmetic number, because the mean of its divisors is an integer number (448511269).

Almost surely, 2^897022537 is an apocalyptic number.

It is an amenable number.

897022537 is a deficient number, since it is larger than the sum of its proper divisors (1).

897022537 is an equidigital number, since it uses as much as digits as its factorization.

897022537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 897022537 is about 29950.3345056445. The cubic root of 897022537 is about 964.4235013150.

The spelling of 897022537 in words is "eight hundred ninety-seven million, twenty-two thousand, five hundred thirty-seven".