51619342 has 4 divisors (see below), whose sum is σ = 77429016. Its totient is φ = 25809670.

The previous prime is 51619241. The next prime is 51619349. The reversal of 51619342 is 24391615.

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 (51619349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12904834 + ... + 12904837.

It is an arithmetic number, because the mean of its divisors is an integer number (19357254).

Almost surely, 2^51619342 is an apocalyptic number.

51619342 is a deficient number, since it is larger than the sum of its proper divisors (25809674).

51619342 is a wasteful number, since it uses less digits than its factorization.

51619342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25809673.

The product of its digits is 6480, while the sum is 31.

The square root of 51619342 is about 7184.6601868147. The cubic root of 51619342 is about 372.3381084115.

The spelling of 51619342 in words is "fifty-one million, six hundred nineteen thousand, three hundred forty-two".