101457949 has 4 divisors (see below), whose sum is σ = 101634364. Its totient is φ = 101281536.

The previous prime is 101457943. The next prime is 101457971. The reversal of 101457949 is 949754101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949754101 = 223 ⋅4258987.

It can be written as a sum of positive squares in 2 ways, for example, as 47361924 + 54096025 = 6882^2 + 7355^2 .

It is a cyclic number.

It is not a de Polignac number, because 101457949 - 2⁹ = 101457437 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 (101457943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87342 + ... + 88495.

It is an arithmetic number, because the mean of its divisors is an integer number (25408591).

Almost surely, 2^101457949 is an apocalyptic number.

It is an amenable number.

101457949 is a deficient number, since it is larger than the sum of its proper divisors (176415).

101457949 is an equidigital number, since it uses as much as digits as its factorization.

101457949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176414.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 101457949 is about 10072.6336675172. The cubic root of 101457949 is about 466.4037420863.

The spelling of 101457949 in words is "one hundred one million, four hundred fifty-seven thousand, nine hundred forty-nine".