51545052 has 48 divisors (see below), whose sum is σ = 143918880. Its totient is φ = 15859584.

The previous prime is 51545029. The next prime is 51545059. The reversal of 51545052 is 25054515.

51545052 is a `hidden beast` number, since 5 + 154 + 505 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51545059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16953 + ... + 19760.

It is an arithmetic number, because the mean of its divisors is an integer number (2998310).

Almost surely, 2^51545052 is an apocalyptic number.

51545052 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51545052 is an abundant number, since it is smaller than the sum of its proper divisors (92373828).

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

51545052 is a wasteful number, since it uses less digits than its factorization.

51545052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36739 (or 36731 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 51545052 is about 7179.4882826006. The cubic root of 51545052 is about 372.1594009902.

Adding to 51545052 its reverse (25054515), we get a palindrome (76599567).

The spelling of 51545052 in words is "fifty-one million, five hundred forty-five thousand, fifty-two".