471453721 has 2 divisors, whose sum is σ = 471453722. Its totient is φ = 471453720.

The previous prime is 471453691. The next prime is 471453743. The reversal of 471453721 is 127354174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384591321 + 86862400 = 19611^2 + 9320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-471453721 is a prime.

It is a super-2 number, since 2×471453721² = 444537222089491682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (471453221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235726860 + 235726861.

It is an arithmetic number, because the mean of its divisors is an integer number (235726861).

Almost surely, 2^471453721 is an apocalyptic number.

It is an amenable number.

471453721 is a deficient number, since it is larger than the sum of its proper divisors (1).

471453721 is an equidigital number, since it uses as much as digits as its factorization.

471453721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 34.

The square root of 471453721 is about 21712.9850780587. The cubic root of 471453721 is about 778.2987912025.

The spelling of 471453721 in words is "four hundred seventy-one million, four hundred fifty-three thousand, seven hundred twenty-one".