40550401 has 4 divisors (see below), whose sum is σ = 40647600. Its totient is φ = 40453204.

The previous prime is 40550399. The next prime is 40550417. The reversal of 40550401 is 10405504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40550401 - 2¹ = 40550399 is a prime.

It is a super-3 number, since 3×40550401³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40550441) 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, 47971 + ... + 48808.

It is an arithmetic number, because the mean of its divisors is an integer number (10161900).

It is a Proth number, since it is equal to 2475 ⋅ 2¹⁴ + 1 and 2475 < 2¹⁴.

Almost surely, 2^40550401 is an apocalyptic number.

It is an amenable number.

40550401 is a deficient number, since it is larger than the sum of its proper divisors (97199).

40550401 is an equidigital number, since it uses as much as digits as its factorization.

40550401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97198.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 40550401 is about 6367.9196760009. The cubic root of 40550401 is about 343.5566698671.

Adding to 40550401 its reverse (10405504), we get a palindrome (50955905).

The spelling of 40550401 in words is "forty million, five hundred fifty thousand, four hundred one".