97145405 has 8 divisors (see below), whose sum is σ = 133228032. Its totient is φ = 66613968.

The previous prime is 97145401. The next prime is 97145417. The reversal of 97145405 is 50454179.

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 97145405 - 2² = 97145401 is a prime.

It is a super-2 number, since 2×97145405² = 18874459425228050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 2775583 = 97145405 / (9 + 7 + 1 + 4 + 5 + 4 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97145401) 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, 1387757 + ... + 1387826.

It is an arithmetic number, because the mean of its divisors is an integer number (16653504).

Almost surely, 2^97145405 is an apocalyptic number.

It is an amenable number.

97145405 is a deficient number, since it is larger than the sum of its proper divisors (36082627).

97145405 is a wasteful number, since it uses less digits than its factorization.

97145405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775595.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 97145405 is about 9856.2368579494. The cubic root of 97145405 is about 459.6995596444.

The spelling of 97145405 in words is "ninety-seven million, one hundred forty-five thousand, four hundred five".