75154681 has 12 divisors (see below), whose sum is σ = 89559540. Its totient is φ = 62845440.

The previous prime is 75154679. The next prime is 75154687. The reversal of 75154681 is 18645157.

It can be written as a sum of positive squares in 2 ways, for example, as 2223081 + 72931600 = 1491^2 + 8540^2 .

It is not a de Polignac number, because 75154681 - 2¹ = 75154679 is a prime.

It is a super-2 number, since 2×75154681² = 11296452152423522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75154681.

It is not an unprimeable number, because it can be changed into a prime (75154687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16696 + ... + 20713.

It is an arithmetic number, because the mean of its divisors is an integer number (7463295).

Almost surely, 2^75154681 is an apocalyptic number.

It is an amenable number.

75154681 is a deficient number, since it is larger than the sum of its proper divisors (14404859).

75154681 is a wasteful number, since it uses less digits than its factorization.

75154681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37464 (or 37457 counting only the distinct ones).

The product of its digits is 33600, while the sum is 37.

The square root of 75154681 is about 8669.1799496838. The cubic root of 75154681 is about 422.0060513646.

The spelling of 75154681 in words is "seventy-five million, one hundred fifty-four thousand, six hundred eighty-one".