651051 has 8 divisors (see below), whose sum is σ = 964560. Its totient is φ = 434016.

The previous prime is 651043. The next prime is 651067. The reversal of 651051 is 150156.

It is not a de Polignac number, because 651051 - 2³ = 651043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (651071) 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 in 7 ways as a sum of consecutive naturals, for example, 12030 + ... + 12083.

It is an arithmetic number, because the mean of its divisors is an integer number (120570).

2⁶⁵¹⁰⁵¹ is an apocalyptic number.

651051 is a deficient number, since it is larger than the sum of its proper divisors (313509).

651051 is a wasteful number, since it uses less digits than its factorization.

651051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24122 (or 24116 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 651051 is about 806.8773140943. The cubic root of 651051 is about 86.6705734597.

It can be divided in two parts, 6510 and 51, that added together give a 8-th power (6561 = 3⁸).

The spelling of 651051 in words is "six hundred fifty-one thousand, fifty-one".