29285251997 has 2 divisors, whose sum is σ = 29285251998. Its totient is φ = 29285251996.

The previous prime is 29285251991. The next prime is 29285252027. The reversal of 29285251997 is 79915258292.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28034144356 + 1251107641 = 167434^2 + 35371^2 .

It is a cyclic number.

It is not a de Polignac number, because 29285251997 - 2¹⁶ = 29285186461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29285251991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14642625998 + 14642625999.

It is an arithmetic number, because the mean of its divisors is an integer number (14642625999).

Almost surely, 2^29285251997 is an apocalyptic number.

It is an amenable number.

29285251997 is a deficient number, since it is larger than the sum of its proper divisors (1).

29285251997 is an equidigital number, since it uses as much as digits as its factorization.

29285251997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 59.

The spelling of 29285251997 in words is "twenty-nine billion, two hundred eighty-five million, two hundred fifty-one thousand, nine hundred ninety-seven".