51889473 has 6 divisors (see below), whose sum is σ = 74951474. Its totient is φ = 34592976.

The previous prime is 51889463. The next prime is 51889483. The reversal of 51889473 is 37498815.

It is an interprime number because it is at equal distance from previous prime (51889463) and next prime (51889483).

It can be written as a sum of positive squares in only one way, i.e., 37051569 + 14837904 = 6087^2 + 3852^2 .

It is not a de Polignac number, because 51889473 - 2⁵ = 51889441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51889463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2882740 + ... + 2882757.

Almost surely, 2^51889473 is an apocalyptic number.

It is an amenable number.

51889473 is a deficient number, since it is larger than the sum of its proper divisors (23062001).

51889473 is a wasteful number, since it uses less digits than its factorization.

51889473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5765503 (or 5765500 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 51889473 is about 7203.4348057021. The cubic root of 51889473 is about 372.9864772870.

The spelling of 51889473 in words is "fifty-one million, eight hundred eighty-nine thousand, four hundred seventy-three".