51989045 has 4 divisors (see below), whose sum is σ = 62386860. Its totient is φ = 41591232.

The previous prime is 51989029. The next prime is 51989059. The reversal of 51989045 is 54098915.

It is a happy number.

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 7806436 + 44182609 = 2794^2 + 6647^2 .

It is a cyclic number.

It is not a de Polignac number, because 51989045 - 2⁴ = 51989029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51988993 and 51989011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5198900 + ... + 5198909.

It is an arithmetic number, because the mean of its divisors is an integer number (15596715).

Almost surely, 2^51989045 is an apocalyptic number.

It is an amenable number.

51989045 is a deficient number, since it is larger than the sum of its proper divisors (10397815).

51989045 is a wasteful number, since it uses less digits than its factorization.

51989045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10397814.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 51989045 is about 7210.3429183361. The cubic root of 51989045 is about 373.2249025205.

The spelling of 51989045 in words is "fifty-one million, nine hundred eighty-nine thousand, forty-five".