651057 has 16 divisors (see below), whose sum is σ = 960960. Its totient is φ = 388800.

The previous prime is 651043. The next prime is 651067. The reversal of 651057 is 750156.

It is a de Polignac number, because none of the positive numbers 2^k-651057 is a prime.

651057 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (651017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3507 + ... + 3687.

It is an arithmetic number, because the mean of its divisors is an integer number (60060).

2⁶⁵¹⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

651057 is a deficient number, since it is larger than the sum of its proper divisors (309903).

651057 is a wasteful number, since it uses less digits than its factorization.

651057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 651057 is about 806.8810321231. The cubic root of 651057 is about 86.6708397070.

Subtracting 651057 from its reverse (750156), we obtain a palindrome (99099).

The spelling of 651057 in words is "six hundred fifty-one thousand, fifty-seven".