651151 has 4 divisors (see below), whose sum is σ = 689472. Its totient is φ = 612832.

The previous prime is 651143. The next prime is 651169. The reversal of 651151 is 151156.

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

It is a cyclic number.

It is not a de Polignac number, because 651151 - 2³ = 651143 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 (651181) 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, 19135 + ... + 19168.

It is an arithmetic number, because the mean of its divisors is an integer number (172368).

2⁶⁵¹¹⁵¹ is an apocalyptic number.

651151 is a deficient number, since it is larger than the sum of its proper divisors (38321).

651151 is a wasteful number, since it uses less digits than its factorization.

651151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38320.

The product of its digits is 150, while the sum is 19.

The square root of 651151 is about 806.9392790043. The cubic root of 651151 is about 86.6750107022.

The spelling of 651151 in words is "six hundred fifty-one thousand, one hundred fifty-one".