51869450 has 24 divisors (see below), whose sum is σ = 97225920. Its totient is φ = 20586800.

The previous prime is 51869443. The next prime is 51869491. The reversal of 51869450 is 5496815.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2591 + ... + 10509.

It is an arithmetic number, because the mean of its divisors is an integer number (4051080).

Almost surely, 2^51869450 is an apocalyptic number.

51869450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51869450 is a deficient number, since it is larger than the sum of its proper divisors (45356470).

51869450 is a wasteful number, since it uses less digits than its factorization.

51869450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8062 (or 8057 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 51869450 is about 7202.0448485135. The cubic root of 51869450 is about 372.9384953706.

The spelling of 51869450 in words is "fifty-one million, eight hundred sixty-nine thousand, four hundred fifty".