51652490 has 16 divisors (see below), whose sum is σ = 93202920. Its totient is φ = 20610240.

The previous prime is 51652459. The next prime is 51652499. The reversal of 51652490 is 9425615.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37687321 + 13965169 = 6139^2 + 3737^2 .

It is not an unprimeable number, because it can be changed into a prime (51652499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1925 + ... + 10344.

Almost surely, 2^51652490 is an apocalyptic number.

51652490 is a deficient number, since it is larger than the sum of its proper divisors (41550430).

51652490 is a wasteful number, since it uses less digits than its factorization.

51652490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12697.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 51652490 is about 7186.9666758654. The cubic root of 51652490 is about 372.4177918671.

The spelling of 51652490 in words is "fifty-one million, six hundred fifty-two thousand, four hundred ninety".