405252253 has 8 divisors (see below), whose sum is σ = 473916608. Its totient is φ = 339280704.

The previous prime is 405252233. The next prime is 405252259. The reversal of 405252253 is 352252504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 405252253 - 2²¹ = 403155101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405252259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672876 + ... + 673477.

It is an arithmetic number, because the mean of its divisors is an integer number (59239576).

Almost surely, 2^405252253 is an apocalyptic number.

405252253 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

405252253 is a deficient number, since it is larger than the sum of its proper divisors (68664355).

405252253 is a wasteful number, since it uses less digits than its factorization.

405252253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346403.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 405252253 is about 20130.8780980860. The cubic root of 405252253 is about 740.0171976768.

It can be divided in two parts, 40525 and 2253, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 405252253 in words is "four hundred five million, two hundred fifty-two thousand, two hundred fifty-three".