157540007 has 2 divisors, whose sum is σ = 157540008. Its totient is φ = 157540006.

The previous prime is 157539883. The next prime is 157540021. The reversal of 157540007 is 700045751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157540007 - 2⁸ = 157539751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157540807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78770003 + 78770004.

It is an arithmetic number, because the mean of its divisors is an integer number (78770004).

Almost surely, 2^157540007 is an apocalyptic number.

157540007 is a deficient number, since it is larger than the sum of its proper divisors (1).

157540007 is an equidigital number, since it uses as much as digits as its factorization.

157540007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 157540007 is about 12551.4942138376. The cubic root of 157540007 is about 540.0868710264.

Adding to 157540007 its reverse (700045751), we get a palindrome (857585758).

The spelling of 157540007 in words is "one hundred fifty-seven million, five hundred forty thousand, seven".