157504551 has 8 divisors (see below), whose sum is σ = 212085744. Its totient is φ = 103963200.

The previous prime is 157504531. The next prime is 157504553. The reversal of 157504551 is 155405751.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 157504551 - 2⁵ = 157504519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157504553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259606 + ... + 260211.

It is an arithmetic number, because the mean of its divisors is an integer number (26510718).

Almost surely, 2^157504551 is an apocalyptic number.

157504551 is a deficient number, since it is larger than the sum of its proper divisors (54581193).

157504551 is a wasteful number, since it uses less digits than its factorization.

157504551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519921.

The product of its (nonzero) digits is 17500, while the sum is 33.

The square root of 157504551 is about 12550.0817128814. The cubic root of 157504551 is about 540.0463506167.

It can be divided in two parts, 15750 and 4551, that added together give a triangular number (20301 = T₂₀₁).

The spelling of 157504551 in words is "one hundred fifty-seven million, five hundred four thousand, five hundred fifty-one".