651150461 has 4 divisors (see below), whose sum is σ = 701238972. Its totient is φ = 601061952.

The previous prime is 651150449. The next prime is 651150497. The reversal of 651150461 is 164051156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 192376900 + 458773561 = 13870^2 + 21419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-651150461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651150061) 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, 25044236 + ... + 25044261.

It is an arithmetic number, because the mean of its divisors is an integer number (175309743).

Almost surely, 2^651150461 is an apocalyptic number.

It is an amenable number.

651150461 is a deficient number, since it is larger than the sum of its proper divisors (50088511).

651150461 is a wasteful number, since it uses less digits than its factorization.

651150461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50088510.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 651150461 is about 25517.6499897620. The cubic root of 651150461 is about 866.7498678670.

The spelling of 651150461 in words is "six hundred fifty-one million, one hundred fifty thousand, four hundred sixty-one".