75542031 has 16 divisors (see below), whose sum is σ = 113587200. Its totient is φ = 49608504.

The previous prime is 75542023. The next prime is 75542053. The reversal of 75542031 is 13024557.

It is a happy number.

It is not a de Polignac number, because 75542031 - 2³ = 75542023 is a prime.

It is a super-2 number, since 2×75542031² = 11413196895209922, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 75541986 and 75542004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75542531) 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, 19071 + ... + 22688.

It is an arithmetic number, because the mean of its divisors is an integer number (7099200).

Almost surely, 2^75542031 is an apocalyptic number.

75542031 is a deficient number, since it is larger than the sum of its proper divisors (38045169).

75542031 is a wasteful number, since it uses less digits than its factorization.

75542031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41835 (or 41829 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 75542031 is about 8691.4918742412. The cubic root of 75542031 is about 422.7298209287.

Adding to 75542031 its reverse (13024557), we get a palindrome (88566588).

The spelling of 75542031 in words is "seventy-five million, five hundred forty-two thousand, thirty-one".