971554451 has 16 divisors (see below), whose sum is σ = 1131357888. Its totient is φ = 817152000.

The previous prime is 971554439. The next prime is 971554453. The reversal of 971554451 is 154455179.

It is a happy number.

It is not a de Polignac number, because 971554451 - 2¹⁴ = 971538067 is a prime.

It is a super-2 number, since 2×971554451² = 1887836102515822802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 971554399 and 971554408.

It is not an unprimeable number, because it can be changed into a prime (971554453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73811 + ... + 85971.

It is an arithmetic number, because the mean of its divisors is an integer number (70709868).

Almost surely, 2^971554451 is an apocalyptic number.

971554451 is a deficient number, since it is larger than the sum of its proper divisors (159803437).

971554451 is a wasteful number, since it uses less digits than its factorization.

971554451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12382.

The product of its digits is 126000, while the sum is 41.

The square root of 971554451 is about 31169.7682217882. The cubic root of 971554451 is about 990.4267965585.

The spelling of 971554451 in words is "nine hundred seventy-one million, five hundred fifty-four thousand, four hundred fifty-one".