36405251 has 6 divisors (see below), whose sum is σ = 38057460. Its totient is φ = 34821908.

The previous prime is 36405241. The next prime is 36405263. The reversal of 36405251 is 15250463.

It is not a de Polignac number, because 36405251 - 2¹⁴ = 36388867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36405251.

It is not an unprimeable number, because it can be changed into a prime (36405221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33881 + ... + 34938.

It is an arithmetic number, because the mean of its divisors is an integer number (6342910).

Almost surely, 2^36405251 is an apocalyptic number.

36405251 is a deficient number, since it is larger than the sum of its proper divisors (1652209).

36405251 is an equidigital number, since it uses as much as digits as its factorization.

36405251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68865 (or 68842 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 36405251 is about 6033.6764082937. The cubic root of 36405251 is about 331.4270947662.

The spelling of 36405251 in words is "thirty-six million, four hundred five thousand, two hundred fifty-one".