51662822 has 4 divisors (see below), whose sum is σ = 77494236. Its totient is φ = 25831410.

The previous prime is 51662797. The next prime is 51662827. The reversal of 51662822 is 22826615.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51662827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12915704 + ... + 12915707.

It is an arithmetic number, because the mean of its divisors is an integer number (19373559).

Almost surely, 2^51662822 is an apocalyptic number.

51662822 is a deficient number, since it is larger than the sum of its proper divisors (25831414).

51662822 is a wasteful number, since it uses less digits than its factorization.

51662822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25831413.

The product of its digits is 11520, while the sum is 32.

The square root of 51662822 is about 7187.6854410860. The cubic root of 51662822 is about 372.4426216743.

The spelling of 51662822 in words is "fifty-one million, six hundred sixty-two thousand, eight hundred twenty-two".