375621797 has 2 divisors, whose sum is σ = 375621798. Its totient is φ = 375621796.

The previous prime is 375621781. The next prime is 375621839. The reversal of 375621797 is 797126573.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317160481 + 58461316 = 17809^2 + 7646^2 .

It is a cyclic number.

It is not a de Polignac number, because 375621797 - 2⁴ = 375621781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (375621767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187810898 + 187810899.

It is an arithmetic number, because the mean of its divisors is an integer number (187810899).

Almost surely, 2^375621797 is an apocalyptic number.

It is an amenable number.

375621797 is a deficient number, since it is larger than the sum of its proper divisors (1).

375621797 is an equidigital number, since it uses as much as digits as its factorization.

375621797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 47.

The square root of 375621797 is about 19380.9648108653. The cubic root of 375621797 is about 721.5231368207.

The spelling of 375621797 in words is "three hundred seventy-five million, six hundred twenty-one thousand, seven hundred ninety-seven".