40055553 has 40 divisors (see below), whose sum is σ = 66733920. Its totient is φ = 23794560.

The previous prime is 40055539. The next prime is 40055569. The reversal of 40055553 is 35555004.

It is not a de Polignac number, because 40055553 - 2¹² = 40051457 is a prime.

It is a super-2 number, since 2×40055553² = 3208894652271618, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40055153) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 25398 + ... + 26928.

It is an arithmetic number, because the mean of its divisors is an integer number (1668348).

Almost surely, 2^40055553 is an apocalyptic number.

It is an amenable number.

40055553 is a deficient number, since it is larger than the sum of its proper divisors (26678367).

40055553 is a wasteful number, since it uses less digits than its factorization.

40055553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579 (or 1570 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 40055553 is about 6328.9456467883. The cubic root of 40055553 is about 342.1534399201.

The spelling of 40055553 in words is "forty million, fifty-five thousand, five hundred fifty-three".