75150261 has 20 divisors (see below), whose sum is σ = 112711500. Its totient is φ = 49899456.

The previous prime is 75150259. The next prime is 75150277. The reversal of 75150261 is 16205157.

It can be written as a sum of positive squares in 2 ways, for example, as 2047761 + 73102500 = 1431^2 + 8550^2 .

It is not a de Polignac number, because 75150261 - 2¹ = 75150259 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75150221) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20065 + ... + 23513.

It is an arithmetic number, because the mean of its divisors is an integer number (5635575).

Almost surely, 2^75150261 is an apocalyptic number.

It is an amenable number.

75150261 is a deficient number, since it is larger than the sum of its proper divisors (37561239).

75150261 is a wasteful number, since it uses less digits than its factorization.

75150261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730 (or 3721 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 75150261 is about 8668.9250198626. The cubic root of 75150261 is about 421.9977781903.

The spelling of 75150261 in words is "seventy-five million, one hundred fifty thousand, two hundred sixty-one".