497191501 has 2 divisors, whose sum is σ = 497191502. Its totient is φ = 497191500.

The previous prime is 497191489. The next prime is 497191553. The reversal of 497191501 is 105191794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427869225 + 69322276 = 20685^2 + 8326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497191501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (497191561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248595750 + 248595751.

It is an arithmetic number, because the mean of its divisors is an integer number (248595751).

Almost surely, 2^497191501 is an apocalyptic number.

It is an amenable number.

497191501 is a deficient number, since it is larger than the sum of its proper divisors (1).

497191501 is an equidigital number, since it uses as much as digits as its factorization.

497191501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 37.

The square root of 497191501 is about 22297.7913928712. The cubic root of 497191501 is about 792.2116634263.

The spelling of 497191501 in words is "four hundred ninety-seven million, one hundred ninety-one thousand, five hundred one".