75162540 has 48 divisors (see below), whose sum is σ = 216149472. Its totient is φ = 19501056.

The previous prime is 75162539. The next prime is 75162557. The reversal of 75162540 is 4526157.

It is a super-3 number, since 3×75162540³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 75162498 and 75162507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14709 + ... + 19148.

It is an arithmetic number, because the mean of its divisors is an integer number (4503114).

Almost surely, 2^75162540 is an apocalyptic number.

It is an amenable number.

75162540 is an abundant number, since it is smaller than the sum of its proper divisors (140986932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75162540 is a wasteful number, since it uses less digits than its factorization.

75162540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33906 (or 33904 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 75162540 is about 8669.6332102344. The cubic root of 75162540 is about 422.0207607165.

Adding to 75162540 its reverse (4526157), we get a palindrome (79688697).

The spelling of 75162540 in words is "seventy-five million, one hundred sixty-two thousand, five hundred forty".