97221477 has 4 divisors (see below), whose sum is σ = 129628640. Its totient is φ = 64814316.

The previous prime is 97221463. The next prime is 97221491. The reversal of 97221477 is 77412279.

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 an interprime number because it is at equal distance from previous prime (97221463) and next prime (97221491).

It is not a de Polignac number, because 97221477 - 2¹⁴ = 97205093 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 (97221407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16203577 + ... + 16203582.

It is an arithmetic number, because the mean of its divisors is an integer number (32407160).

Almost surely, 2^97221477 is an apocalyptic number.

It is an amenable number.

97221477 is a deficient number, since it is larger than the sum of its proper divisors (32407163).

97221477 is a wasteful number, since it uses less digits than its factorization.

97221477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32407162.

The product of its digits is 49392, while the sum is 39.

The square root of 97221477 is about 9860.0951820964. The cubic root of 97221477 is about 459.8195211967.

The spelling of 97221477 in words is "ninety-seven million, two hundred twenty-one thousand, four hundred seventy-seven".