157619121 has 32 divisors (see below), whose sum is σ = 244187136. Its totient is φ = 89376000.

The previous prime is 157619113. The next prime is 157619167. The reversal of 157619121 is 121916751.

It is not a de Polignac number, because 157619121 - 2³ = 157619113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (157619101) 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 31 ways as a sum of consecutive naturals, for example, 106416 + ... + 107886.

It is an arithmetic number, because the mean of its divisors is an integer number (7630848).

Almost surely, 2^157619121 is an apocalyptic number.

157619121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

157619121 is a deficient number, since it is larger than the sum of its proper divisors (86568015).

157619121 is a wasteful number, since it uses less digits than its factorization.

157619121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693.

The product of its digits is 3780, while the sum is 33.

The square root of 157619121 is about 12554.6453952312. The cubic root of 157619121 is about 540.1772634776.

The spelling of 157619121 in words is "one hundred fifty-seven million, six hundred nineteen thousand, one hundred twenty-one".