72757101 has 4 divisors (see below), whose sum is σ = 97009472. Its totient is φ = 48504732.

The previous prime is 72757051. The next prime is 72757103. The reversal of 72757101 is 10175727.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10175727 = 3 ⋅3391909.

It is not a de Polignac number, because 72757101 - 2²¹ = 70659949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72757103) 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, 12126181 + ... + 12126186.

It is an arithmetic number, because the mean of its divisors is an integer number (24252368).

Almost surely, 2^72757101 is an apocalyptic number.

It is an amenable number.

72757101 is a deficient number, since it is larger than the sum of its proper divisors (24252371).

72757101 is a wasteful number, since it uses less digits than its factorization.

72757101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24252370.

The product of its (nonzero) digits is 3430, while the sum is 30.

The square root of 72757101 is about 8529.7773124508. Note that the first 3 decimals coincide. The cubic root of 72757101 is about 417.4698624068.

The spelling of 72757101 in words is "seventy-two million, seven hundred fifty-seven thousand, one hundred one".