97551143 has 2 divisors, whose sum is σ = 97551144. Its totient is φ = 97551142.

The previous prime is 97551137. The next prime is 97551227. The reversal of 97551143 is 34115579.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97551143 - 2¹⁸ = 97288999 is a prime.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48775571 + 48775572.

It is an arithmetic number, because the mean of its divisors is an integer number (48775572).

Almost surely, 2^97551143 is an apocalyptic number.

97551143 is a deficient number, since it is larger than the sum of its proper divisors (1).

97551143 is an equidigital number, since it uses as much as digits as its factorization.

97551143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 35.

The square root of 97551143 is about 9876.7982160212. The cubic root of 97551143 is about 460.3386652225.

The spelling of 97551143 in words is "ninety-seven million, five hundred fifty-one thousand, one hundred forty-three".