51002154 has 24 divisors (see below), whose sum is σ = 126291360. Its totient is φ = 14572008.

The previous prime is 51002153. The next prime is 51002167. The reversal of 51002154 is 45120015.

51002154 is a `hidden beast` number, since 510 + 0 + 2 + 154 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (51002153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202264 + ... + 202515.

It is an arithmetic number, because the mean of its divisors is an integer number (5262140).

Almost surely, 2^51002154 is an apocalyptic number.

51002154 is an abundant number, since it is smaller than the sum of its proper divisors (75289206).

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

51002154 is a wasteful number, since it uses less digits than its factorization.

51002154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404794 (or 404791 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 51002154 is about 7141.5792371156. The cubic root of 51002154 is about 370.8481977405.

Adding to 51002154 its reverse (45120015), we get a palindrome (96122169).

The spelling of 51002154 in words is "fifty-one million, two thousand, one hundred fifty-four".