100607557 has 4 divisors (see below), whose sum is σ = 100722636. Its totient is φ = 100492480.

The previous prime is 100607519. The next prime is 100607561. The reversal of 100607557 is 755706001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 755706001 = 73 ⋅10352137.

It can be written as a sum of positive squares in 2 ways, for example, as 45239076 + 55368481 = 6726^2 + 7441^2 .

It is a cyclic number.

It is not a de Polignac number, because 100607557 - 2²³ = 92218949 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 (100607587) 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, 56218 + ... + 57979.

It is an arithmetic number, because the mean of its divisors is an integer number (25180659).

Almost surely, 2^100607557 is an apocalyptic number.

It is an amenable number.

100607557 is a deficient number, since it is larger than the sum of its proper divisors (115079).

100607557 is an equidigital number, since it uses as much as digits as its factorization.

100607557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115078.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 100607557 is about 10030.3318489470. The cubic root of 100607557 is about 465.0969959912.

The spelling of 100607557 in words is "one hundred million, six hundred seven thousand, five hundred fifty-seven".