73772751 has 32 divisors (see below), whose sum is σ = 109283328. Its totient is φ = 43983360.

The previous prime is 73772747. The next prime is 73772771. The reversal of 73772751 is 15727737.

It is not a de Polignac number, because 73772751 - 2² = 73772747 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73772701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305991 + ... + 306231.

It is an arithmetic number, because the mean of its divisors is an integer number (3415104).

Almost surely, 2^73772751 is an apocalyptic number.

73772751 is a deficient number, since it is larger than the sum of its proper divisors (35510577).

73772751 is a wasteful number, since it uses less digits than its factorization.

73772751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471.

The product of its digits is 72030, while the sum is 39.

The square root of 73772751 is about 8589.1065309495. The cubic root of 73772751 is about 419.4034444546.

The spelling of 73772751 in words is "seventy-three million, seven hundred seventy-two thousand, seven hundred fifty-one".