101274945 has 32 divisors (see below), whose sum is σ = 166013184. Its totient is φ = 52704000.

The previous prime is 101274941. The next prime is 101274947. The reversal of 101274945 is 549472101.

It is a happy number.

It is not a de Polignac number, because 101274945 - 2² = 101274941 is a prime.

It is a super-2 number, since 2×101274945² = 20513228969506050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (101274941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137799 + ... + 138531.

It is an arithmetic number, because the mean of its divisors is an integer number (5187912).

Almost surely, 2^101274945 is an apocalyptic number.

101274945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101274945 is a deficient number, since it is larger than the sum of its proper divisors (64738239).

101274945 is a wasteful number, since it uses less digits than its factorization.

101274945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 101274945 is about 10063.5453494283. The cubic root of 101274945 is about 466.1231492513.

It can be divided in two parts, 1012 and 74945, that added together give a palindrome (75957).

The spelling of 101274945 in words is "one hundred one million, two hundred seventy-four thousand, nine hundred forty-five".