51151623 has 8 divisors (see below), whose sum is σ = 72214128. Its totient is φ = 32095104.

The previous prime is 51151613. The next prime is 51151687. The reversal of 51151623 is 32615115.

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

It is not a de Polignac number, because 51151623 - 2¹⁰ = 51150599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51151593 and 51151602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51151613) 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, 501436 + ... + 501537.

It is an arithmetic number, because the mean of its divisors is an integer number (9026766).

Almost surely, 2^51151623 is an apocalyptic number.

51151623 is a deficient number, since it is larger than the sum of its proper divisors (21062505).

51151623 is a wasteful number, since it uses less digits than its factorization.

51151623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002993.

The product of its digits is 900, while the sum is 24.

The square root of 51151623 is about 7152.0362834650. The cubic root of 51151623 is about 371.2101187193.

Adding to 51151623 its reverse (32615115), we get a palindrome (83766738).

The spelling of 51151623 in words is "fifty-one million, one hundred fifty-one thousand, six hundred twenty-three".