51040030 has 16 divisors (see below), whose sum is σ = 92597760. Its totient is φ = 20254752.

The previous prime is 51040021. The next prime is 51040037. The reversal of 51040030 is 3004015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51040037) 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, 18825 + ... + 21364.

It is an arithmetic number, because the mean of its divisors is an integer number (5787360).

Almost surely, 2^51040030 is an apocalyptic number.

51040030 is a deficient number, since it is larger than the sum of its proper divisors (41557730).

51040030 is a wasteful number, since it uses less digits than its factorization.

51040030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40323.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 51040030 is about 7144.2305393933. The cubic root of 51040030 is about 370.9399766792.

Adding to 51040030 its reverse (3004015), we get a palindrome (54044045).

The spelling of 51040030 in words is "fifty-one million, forty thousand, thirty".