461221773 has 4 divisors (see below), whose sum is σ = 614962368. Its totient is φ = 307481180.

The previous prime is 461221759. The next prime is 461221807. The reversal of 461221773 is 377122164.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 461221773 - 2¹² = 461217677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461221723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76870293 + ... + 76870298.

It is an arithmetic number, because the mean of its divisors is an integer number (153740592).

Almost surely, 2^461221773 is an apocalyptic number.

It is an amenable number.

461221773 is a deficient number, since it is larger than the sum of its proper divisors (153740595).

461221773 is a wasteful number, since it uses less digits than its factorization.

461221773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153740594.

The product of its digits is 14112, while the sum is 33.

The square root of 461221773 is about 21476.0744317950. The cubic root of 461221773 is about 772.6270940124.

It can be divided in two parts, 46122 and 1773, that added together give a triangular number (47895 = T₃₀₉).

The spelling of 461221773 in words is "four hundred sixty-one million, two hundred twenty-one thousand, seven hundred seventy-three".