51622438 has 16 divisors (see below), whose sum is σ = 93701664. Its totient is φ = 20822400.

The previous prime is 51622433. The next prime is 51622451. The reversal of 51622438 is 83422615.

It is a super-2 number, since 2×51622438² = 5329752210127688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51622433) 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, 108213 + ... + 108688.

It is an arithmetic number, because the mean of its divisors is an integer number (5856354).

Almost surely, 2^51622438 is an apocalyptic number.

51622438 is a deficient number, since it is larger than the sum of its proper divisors (42079226).

51622438 is a wasteful number, since it uses less digits than its factorization.

51622438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216927.

The product of its digits is 11520, while the sum is 31.

The square root of 51622438 is about 7184.8756426260. The cubic root of 51622438 is about 372.3455522345.

The spelling of 51622438 in words is "fifty-one million, six hundred twenty-two thousand, four hundred thirty-eight".