51494998 has 8 divisors (see below), whose sum is σ = 77349240. Its totient is φ = 25711920.

The previous prime is 51494987. The next prime is 51495011. The reversal of 51494998 is 89949415.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 15943 + ... + 18898.

It is an arithmetic number, because the mean of its divisors is an integer number (9668655).

Almost surely, 2^51494998 is an apocalyptic number.

51494998 is a deficient number, since it is larger than the sum of its proper divisors (25854242).

51494998 is a wasteful number, since it uses less digits than its factorization.

51494998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35582.

The product of its digits is 466560, while the sum is 49.

The square root of 51494998 is about 7176.0015328872. The cubic root of 51494998 is about 372.0388973471.

The spelling of 51494998 in words is "fifty-one million, four hundred ninety-four thousand, nine hundred ninety-eight".