974551 has 2 divisors, whose sum is σ = 974552. Its totient is φ = 974550.

The previous prime is 974539. The next prime is 974557. The reversal of 974551 is 155479.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-974551 is a prime.

974551 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (974557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487275 + 487276.

It is an arithmetic number, because the mean of its divisors is an integer number (487276).

2⁹⁷⁴⁵⁵¹ is an apocalyptic number.

974551 is a deficient number, since it is larger than the sum of its proper divisors (1).

974551 is an equidigital number, since it uses as much as digits as its factorization.

974551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 31.

The square root of 974551 is about 987.1934967371. The cubic root of 974551 is about 99.1444003708.

The spelling of 974551 in words is "nine hundred seventy-four thousand, five hundred fifty-one".