4020352251 has 4 divisors (see below), whose sum is σ = 5360469672. Its totient is φ = 2680234832.

The previous prime is 4020352241. The next prime is 4020352261. The reversal of 4020352251 is 1522530204.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4020352241) and next prime (4020352261).

It is a cyclic number.

It is not a de Polignac number, because 4020352251 - 2²² = 4016157947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4020352201) 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, 670058706 + ... + 670058711.

It is an arithmetic number, because the mean of its divisors is an integer number (1340117418).

Almost surely, 2^4020352251 is an apocalyptic number.

4020352251 is a deficient number, since it is larger than the sum of its proper divisors (1340117421).

4020352251 is a wasteful number, since it uses less digits than its factorization.

4020352251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340117420.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 4020352251 is about 63406.2477284376. The cubic root of 4020352251 is about 1590.0887640806.

Adding to 4020352251 its reverse (1522530204), we get a palindrome (5542882455).

The spelling of 4020352251 in words is "four billion, twenty million, three hundred fifty-two thousand, two hundred fifty-one".