51145104 has 20 divisors (see below), whose sum is σ = 132124976. Its totient is φ = 17048352.

The previous prime is 51145079. The next prime is 51145109. The reversal of 51145104 is 40154115.

It is not an unprimeable number, because it can be changed into a prime (51145109) 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, 532714 + ... + 532809.

Almost surely, 2^51145104 is an apocalyptic number.

It is an amenable number.

51145104 is an abundant number, since it is smaller than the sum of its proper divisors (80979872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51145104 is a wasteful number, since it uses less digits than its factorization.

51145104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065534 (or 1065528 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 51145104 is about 7151.5805246113. The cubic root of 51145104 is about 371.1943484697.

Adding to 51145104 its reverse (40154115), we get a palindrome (91299219).

The spelling of 51145104 in words is "fifty-one million, one hundred forty-five thousand, one hundred four".