51358442 has 8 divisors (see below), whose sum is σ = 79119876. Its totient is φ = 24985152.

The previous prime is 51358441. The next prime is 51358457. The reversal of 51358442 is 24485315.

It can be written as a sum of positive squares in 2 ways, for example, as 34703881 + 16654561 = 5891^2 + 4081^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 51358399 and 51358408.

It is not an unprimeable number, because it can be changed into a prime (51358441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346943 + ... + 347090.

Almost surely, 2^51358442 is an apocalyptic number.

51358442 is a deficient number, since it is larger than the sum of its proper divisors (27761434).

51358442 is a wasteful number, since it uses less digits than its factorization.

51358442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694072.

The product of its digits is 19200, while the sum is 32.

The square root of 51358442 is about 7166.4804471930. The cubic root of 51358442 is about 371.7097448733.

The spelling of 51358442 in words is "fifty-one million, three hundred fifty-eight thousand, four hundred forty-two".