75520151 has 4 divisors (see below), whose sum is σ = 86308752. Its totient is φ = 64731552.

The previous prime is 75520099. The next prime is 75520153. The reversal of 75520151 is 15102557.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15102557 = 47 ⋅321331.

It is a cyclic number.

It is not a de Polignac number, because 75520151 - 2¹⁴ = 75503767 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75520151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75520153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5394290 + ... + 5394303.

It is an arithmetic number, because the mean of its divisors is an integer number (21577188).

Almost surely, 2^75520151 is an apocalyptic number.

75520151 is a deficient number, since it is larger than the sum of its proper divisors (10788601).

75520151 is a wasteful number, since it uses less digits than its factorization.

75520151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10788600.

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 75520151 is about 8690.2330808788. The cubic root of 75520151 is about 422.6890038212.

The spelling of 75520151 in words is "seventy-five million, five hundred twenty thousand, one hundred fifty-one".