101401649 has 2 divisors, whose sum is σ = 101401650. Its totient is φ = 101401648.

The previous prime is 101401633. The next prime is 101401673. The reversal of 101401649 is 946104101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77704225 + 23697424 = 8815^2 + 4868^2 .

It is a cyclic number.

It is not a de Polignac number, because 101401649 - 2⁴ = 101401633 is a prime.

It is not a weakly prime, because it can be changed into another prime (101401609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50700824 + 50700825.

It is an arithmetic number, because the mean of its divisors is an integer number (50700825).

Almost surely, 2^101401649 is an apocalyptic number.

It is an amenable number.

101401649 is a deficient number, since it is larger than the sum of its proper divisors (1).

101401649 is an equidigital number, since it uses as much as digits as its factorization.

101401649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 101401649 is about 10069.8385786466. The cubic root of 101401649 is about 466.3174554704.

The spelling of 101401649 in words is "one hundred one million, four hundred one thousand, six hundred forty-nine".