40520252 has 12 divisors (see below), whose sum is σ = 71387400. Its totient is φ = 20123856.

The previous prime is 40520237. The next prime is 40520257. The reversal of 40520252 is 25202504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40520257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33398 + ... + 34589.

It is an arithmetic number, because the mean of its divisors is an integer number (5948950).

Almost surely, 2^40520252 is an apocalyptic number.

It is an amenable number.

40520252 is a deficient number, since it is larger than the sum of its proper divisors (30867148).

40520252 is a wasteful number, since it uses less digits than its factorization.

40520252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68140 (or 68138 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 40520252 is about 6365.5519792081. The cubic root of 40520252 is about 343.4715045925.

Adding to 40520252 its reverse (25202504), we get a palindrome (65722756).

The spelling of 40520252 in words is "forty million, five hundred twenty thousand, two hundred fifty-two".