37148561 has 4 divisors (see below), whose sum is σ = 37280112. Its totient is φ = 37017012.

The previous prime is 37148557. The next prime is 37148563. The reversal of 37148561 is 16584173.

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: 16584173 = 23 ⋅721051.

It is a cyclic number.

It is not a de Polignac number, because 37148561 - 2² = 37148557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37148563) 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, 65351 + ... + 65916.

It is an arithmetic number, because the mean of its divisors is an integer number (9320028).

Almost surely, 2^37148561 is an apocalyptic number.

It is an amenable number.

37148561 is a deficient number, since it is larger than the sum of its proper divisors (131551).

37148561 is a wasteful number, since it uses less digits than its factorization.

37148561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131550.

The product of its digits is 20160, while the sum is 35.

The square root of 37148561 is about 6094.9619358943. The cubic root of 37148561 is about 333.6675699678.

The spelling of 37148561 in words is "thirty-seven million, one hundred forty-eight thousand, five hundred sixty-one".