43542051 has 16 divisors (see below), whose sum is σ = 66441984. Its totient is φ = 24846624.

The previous prime is 43542043. The next prime is 43542089. The reversal of 43542051 is 15024534.

It is not a de Polignac number, because 43542051 - 2³ = 43542043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43542001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29241 + ... + 30693.

It is an arithmetic number, because the mean of its divisors is an integer number (4152624).

Almost surely, 2^43542051 is an apocalyptic number.

43542051 is a deficient number, since it is larger than the sum of its proper divisors (22899933).

43542051 is a wasteful number, since it uses less digits than its factorization.

43542051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890.

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

The square root of 43542051 is about 6598.6400871695. The cubic root of 43542051 is about 351.8057721308.

Adding to 43542051 its reverse (15024534), we get a palindrome (58566585).

It can be divided in two parts, 435 and 42051, that added together give a triangular number (42486 = T₂₉₁).

The spelling of 43542051 in words is "forty-three million, five hundred forty-two thousand, fifty-one".