51542025 has 24 divisors (see below), whose sum is σ = 85646304. Its totient is φ = 27350400.

The previous prime is 51541991. The next prime is 51542027. The reversal of 51542025 is 52024515.

It is a happy number.

It is not a de Polignac number, because 51542025 - 2¹¹ = 51539977 is a prime.

It is a super-2 number, since 2×51542025² = 5313160682201250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51541986 and 51542004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51542027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14197 + ... + 17453.

It is an arithmetic number, because the mean of its divisors is an integer number (3568596).

Almost surely, 2^51542025 is an apocalyptic number.

It is an amenable number.

51542025 is a deficient number, since it is larger than the sum of its proper divisors (34104279).

51542025 is a wasteful number, since it uses less digits than its factorization.

51542025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481 (or 3476 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 51542025 is about 7179.2774706094. The cubic root of 51542025 is about 372.1521157868.

The spelling of 51542025 in words is "fifty-one million, five hundred forty-two thousand, twenty-five".