73150021 has 8 divisors (see below), whose sum is σ = 83976704. Its totient is φ = 62417520.

The previous prime is 73149953. The next prime is 73150037. The reversal of 73150021 is 12005137.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73150021 - 2¹¹ = 73147973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73150061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21870 + ... + 24991.

It is an arithmetic number, because the mean of its divisors is an integer number (10497088).

Almost surely, 2^73150021 is an apocalyptic number.

It is an amenable number.

73150021 is a deficient number, since it is larger than the sum of its proper divisors (10826683).

73150021 is a wasteful number, since it uses less digits than its factorization.

73150021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47091.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 73150021 is about 8552.7785543647. The cubic root of 73150021 is about 418.2200199262.

Adding to 73150021 its reverse (12005137), we get a palindrome (85155158).

The spelling of 73150021 in words is "seventy-three million, one hundred fifty thousand, twenty-one".