51863623 has 8 divisors (see below), whose sum is σ = 59317920. Its totient is φ = 44420640.

The previous prime is 51863611. The next prime is 51863657. The reversal of 51863623 is 32636815.

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

It is a cyclic number.

It is not a de Polignac number, because 51863623 - 2¹³ = 51855431 is a prime.

It is a super-2 number, since 2×51863623² = 5379670781372258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51863663) 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, 12693 + ... + 16273.

It is an arithmetic number, because the mean of its divisors is an integer number (7414740).

Almost surely, 2^51863623 is an apocalyptic number.

51863623 is a deficient number, since it is larger than the sum of its proper divisors (7454297).

51863623 is a wasteful number, since it uses less digits than its factorization.

51863623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657.

The product of its digits is 25920, while the sum is 34.

The square root of 51863623 is about 7201.6402992652. The cubic root of 51863623 is about 372.9245295777.

The spelling of 51863623 in words is "fifty-one million, eight hundred sixty-three thousand, six hundred twenty-three".