51958645 has 16 divisors (see below), whose sum is σ = 64152000. Its totient is φ = 40382848.

The previous prime is 51958639. The next prime is 51958649. The reversal of 51958645 is 54685915.

It is a cyclic number.

It is not a de Polignac number, because 51958645 - 2³ = 51958637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51958649) 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, 25266 + ... + 27244.

It is an arithmetic number, because the mean of its divisors is an integer number (4009500).

Almost surely, 2^51958645 is an apocalyptic number.

It is an amenable number.

51958645 is a deficient number, since it is larger than the sum of its proper divisors (12193355).

51958645 is a wasteful number, since it uses less digits than its factorization.

51958645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132.

The product of its digits is 216000, while the sum is 43.

The square root of 51958645 is about 7208.2345272612. The cubic root of 51958645 is about 373.1521420044.

The spelling of 51958645 in words is "fifty-one million, nine hundred fifty-eight thousand, six hundred forty-five".