51546969 has 8 divisors (see below), whose sum is σ = 76365920. Its totient is φ = 34364628.

The previous prime is 51546953. The next prime is 51546983. The reversal of 51546969 is 96964515.

It is a happy number.

51546969 is a `hidden beast` number, since 515 + 46 + 96 + 9 = 666.

It is not a de Polignac number, because 51546969 - 2⁴ = 51546953 is a prime.

It is a super-2 number, since 2×51546969² = 5314180026173922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51541969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954547 + ... + 954600.

It is an arithmetic number, because the mean of its divisors is an integer number (9545740).

Almost surely, 2^51546969 is an apocalyptic number.

It is an amenable number.

51546969 is a deficient number, since it is larger than the sum of its proper divisors (24818951).

51546969 is a wasteful number, since it uses less digits than its factorization.

51546969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909156 (or 1909150 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 51546969 is about 7179.6217866960. The cubic root of 51546969 is about 372.1640145641.

The spelling of 51546969 in words is "fifty-one million, five hundred forty-six thousand, nine hundred sixty-nine".