157226773 has 4 divisors (see below), whose sum is σ = 171520128. Its totient is φ = 142933420.

The previous prime is 157226749. The next prime is 157226789. The reversal of 157226773 is 377622751.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157226773 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 (157221773) 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, 7146661 + ... + 7146682.

It is an arithmetic number, because the mean of its divisors is an integer number (42880032).

Almost surely, 2^157226773 is an apocalyptic number.

It is an amenable number.

157226773 is a deficient number, since it is larger than the sum of its proper divisors (14293355).

157226773 is a wasteful number, since it uses less digits than its factorization.

157226773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14293354.

The product of its digits is 123480, while the sum is 40.

The square root of 157226773 is about 12539.0100486442. The cubic root of 157226773 is about 539.7286851497.

The spelling of 157226773 in words is "one hundred fifty-seven million, two hundred twenty-six thousand, seven hundred seventy-three".