51402566 has 8 divisors (see below), whose sum is σ = 77692824. Its totient is φ = 25504960.

The previous prime is 51402563. The next prime is 51402607. The reversal of 51402566 is 66520415.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51402563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97835 + ... + 98358.

It is an arithmetic number, because the mean of its divisors is an integer number (9711603).

Almost surely, 2^51402566 is an apocalyptic number.

51402566 is a deficient number, since it is larger than the sum of its proper divisors (26290258).

51402566 is a wasteful number, since it uses less digits than its factorization.

51402566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196326.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 51402566 is about 7169.5582848597. The cubic root of 51402566 is about 371.8161644179.

The spelling of 51402566 in words is "fifty-one million, four hundred two thousand, five hundred sixty-six".