51516054 has 16 divisors (see below), whose sum is σ = 114480240. Its totient is φ = 17172000.

The previous prime is 51516043. The next prime is 51516071. The reversal of 51516054 is 45061515.

It is a happy number.

51516054 is a `hidden beast` number, since 5 + 1 + 51 + 605 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476947 + ... + 477054.

It is an arithmetic number, because the mean of its divisors is an integer number (7155015).

Almost surely, 2^51516054 is an apocalyptic number.

51516054 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51516054 is an abundant number, since it is smaller than the sum of its proper divisors (62964186).

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

51516054 is a wasteful number, since it uses less digits than its factorization.

51516054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954012 (or 954006 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 51516054 is about 7177.4684952287. The cubic root of 51516054 is about 372.0895986052.

Adding to 51516054 its reverse (45061515), we get a palindrome (96577569).

The spelling of 51516054 in words is "fifty-one million, five hundred sixteen thousand, fifty-four".