103157749 has 4 divisors (see below), whose sum is σ = 103298080. Its totient is φ = 103017420.

The previous prime is 103157741. The next prime is 103157777. The reversal of 103157749 is 947751301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 947751301 = 7 ⋅135393043.

It is a cyclic number.

It is not a de Polignac number, because 103157749 - 2³ = 103157741 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 (103157741) 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, 69057 + ... + 70534.

It is an arithmetic number, because the mean of its divisors is an integer number (25824520).

Almost surely, 2^103157749 is an apocalyptic number.

It is an amenable number.

103157749 is a deficient number, since it is larger than the sum of its proper divisors (140331).

103157749 is an equidigital number, since it uses as much as digits as its factorization.

103157749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140330.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 103157749 is about 10156.6603270957. The cubic root of 103157749 is about 468.9939988594.

The spelling of 103157749 in words is "one hundred three million, one hundred fifty-seven thousand, seven hundred forty-nine".